# R

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Eighteenth letter of the latin alphabet

For the programming language, see [R (programming language)](/source/R_(programming_language)). For other uses, see [R (disambiguation)](/source/R_(disambiguation)).

For [technical reasons](https://en.wikipedia.org/wiki/Wikipedia:Naming_conventions_(technical_restrictions)), "R#J" redirects here. For the film, see [*R and J*](/source/R_and_J).

R R r Usage Writing system latin script Type Alphabetic Language of origin Latin language Sound values [r] [ɾ] [ɹ] [ɻ] [ɺ] [l] [ʀ] [ʁ] [ɽ] [ʐ] [ʕ] [ə] [ɐ] [ɛ] [ɑ] [ɒ] [o] (table) (English variations) In Unicode U+0052, U+0072 Alphabetical position 18 History Development Ρ ρ 𐌓 R r Time period c. 50 CE to present Descendants ℟ ℞ ® Ɍ ᚱ 𐍂 Ꭱ Sisters Р ר ر ܪ ࠓ 𐎗 𐡓 ረ Ռ ռ Ր ր ર र Other Associated graphs r(x) rh Writing direction Left-to-right This article contains phonetic transcriptions in the International Phonetic Alphabet (IPA). For an introductory guide on IPA symbols, see Help:IPA. For the distinction between [ ], / / and ⟨ ⟩, see IPA § Brackets and transcription delimiters.

ISO basic Latin alphabet AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz v t e

**R** ([minuscule](/source/Letter_case): **r**) is the eighteenth [letter](/source/Letter_(alphabet)) of the [Latin alphabet](/source/Latin_alphabet), used in the [modern English alphabet](/source/English_alphabet), the alphabets of other western European languages and others worldwide. Its name in English is [*ar*](/source/English_alphabet#Letter_names) (pronounced [/ˈɑːr/](https://en.wikipedia.org/wiki/Help:IPA/English) [ⓘ](https://en.wikipedia.org/wiki/File:LL-Q1860_(eng)-Flame,_not_lame-R.wav)), plural *ars*.[1]

The letter ⟨r⟩ is the eighth most common letter in English and the fourth-most common consonant, after ⟨t⟩, ⟨n⟩, and ⟨s⟩.[2]

## Name

The name of the letter in Latin was *er* (/ɛr/), following the pattern of other letters representing [continuants](/source/Continuant), such as ⟨F⟩, ⟨L⟩, ⟨M⟩, ⟨N⟩, and ⟨S⟩. This name is preserved in [French](/source/French_language) and many other languages. In [Middle English](/source/Middle_English), the name of the letter changed from /ɛr/ to /ar/, following a pattern exhibited in many other words such as *farm* (compare French *ferme*) and *star* (compare German *Stern*).

In [Hiberno-English](/source/Hiberno-English), the letter is called /ɒr/ or /ɔːr/, somewhat similar to *oar*, *ore*, *orr*.[3][4][5]

The letter ⟨R⟩ is sometimes referred to as the *littera canīna* 'canine letter', often rendered in English as the **dog's letter**. This Latin term referred to the Latin ⟨R⟩ that was [trilled](/source/Trill_consonant) to sound like a growling dog, a spoken style referred to as *vōx canīna* 'dog voice' (e.g. in Spanish *perro* 'dog').[6]

## History

Egyptian Proto-Sinaitic Phoenician Resh Western Greek Rho Etruscan R Latin R

### Antiquity

The word *prognatus* as written on the [Sarcophagus of Lucius Cornelius Scipio Barbatus](/source/Sarcophagus_of_Lucius_Cornelius_Scipio_Barbatus) (280 BC) reveals the full development of the Latin ⟨R⟩ by that time; the letter ⟨P⟩ at the same time still retains its archaic shape distinguishing it from Greek or Old Italic *rho*.

The letter ⟨R⟩ is believed to derive ultimately from an image of a head, used in [Semitic alphabets](/source/Semitic_alphabets) for the sound /r/ because the word for 'head' was *[rêš](/source/R%C3%AA%C5%A1)* or similar in most [Semitic languages](/source/Semitic_languages). The word became the name of the letter, as an example of [acrophony](/source/Acrophony).

It developed into Greek ⟨[Ρ](/source/Rho_(letter))⟩ ῥῶ (*rhô*) and Latin ⟨R⟩. The descending diagonal stroke develops as a graphic variant in some [Western Greek alphabets](/source/Western_Greek_alphabets) (writing *rho* as ⟨⟩), but it was not adopted in most [Old Italic alphabets](/source/Old_Italic_alphabet); most Old Italic alphabets show variants of their *rho* between a ⟨P⟩ and a ⟨D⟩ shape, but without the Western Greek descending stroke. Indeed, the oldest known forms of the Latin alphabet itself of the 7th to 6th centuries BC, in the [Duenos](/source/Duenos_Inscription) and the [Forum inscription](/source/Forum_inscription), still write ⟨r⟩ using the ⟨P⟩ shape of the letter. The [Lapis Satricanus](/source/Lapis_Satricanus) inscription shows the form of the Latin alphabet around 500 BC. Here, the rounded, closing ⟨Π⟩ shape of the ⟨p⟩ and the ⟨Ρ⟩ shape of the ⟨r⟩ have become difficult to distinguish. The descending stroke of the Latin letter ⟨R⟩ has fully developed by the 3rd century BC, as seen in the [Tomb of the Scipios](/source/Tomb_of_the_Scipios) sarcophagus inscriptions of that era. From c. 50 AD, the letter ⟨P⟩ would be written with its loop fully closed, assuming the shape formerly taken by ⟨R⟩.

### Cursive

18th-century example of use of *r rotunda* in English blackletter typography

Letter ⟨R⟩ from the alphabet by [Luca Pacioli](/source/Luca_Pacioli), in *[De divina proportione](/source/De_divina_proportione)* (1509)

The minuscule form ⟨r⟩ developed through several variations on the capital form. Along with Latin minuscule writing in general, it developed ultimately from [Roman cursive](/source/Roman_cursive) via the [uncial](/source/Uncial) script of Late Antiquity into the [Carolingian minuscule](/source/Carolingian_minuscule) of the 9th century.

In handwriting, it was common not to close the bottom of the loop but continue into the leg, saving an extra pen stroke. The loop-leg stroke shortened into the simple arc used in the Carolingian minuscule and until today.

A calligraphic minuscule ⟨r⟩, known as *[r rotunda](/source/R_rotunda)* ⟨ꝛ⟩, was used in the sequence ⟨or⟩, bending the shape of the ⟨r⟩ to accommodate the bulge of the ⟨o⟩ as in ⟨oꝛ⟩, as opposed to ⟨or⟩. Later, the same variant was also used where ⟨r⟩ followed other lower case letters with a rounded loop towards the right, such as with ⟨b⟩, ⟨h⟩, ⟨p⟩, as well as to write the geminate ⟨rr⟩ as ⟨ꝛꝛ⟩. Use of *r rotunda* was mostly tied to [blackletter](/source/Blackletter) typefaces, and the glyph fell out of use along with blackletter fonts in English language contexts mostly by the 18th century.

[Insular script](/source/Insular_script) used a minuscule which retained two downward strokes, but which did not close the loop, known as the *Insular r* ⟨ꞃ⟩; this variant survives in the [Gaelic type](/source/Gaelic_type) popular in Ireland until the mid-20th century, but has become largely limited to a decorative function.

## Use in writing systems

See also: [Rhotic consonant](/source/Rhotic_consonant), [R-colored vowel](/source/R-colored_vowel), and [Guttural R](/source/Guttural_R)

Pronunciation of ⟨r⟩ by language Orthography Pronunciation Albanian /ɾ/ Arabic romanization /r/ or /ʀ/ or /ɾ/ Aragonese /ɾ/, /r/ Asturian /ɾ/, /r/ Basque /ɾ/, /r/ Catalan [ɾ], [r], [∅] Standard Chinese (Pinyin) /ɻ/ Danish [ʁ], [ɐ̯], [ɐ] Dutch [ɾ], [ʀ], [ʁ], [ɻ], [ə̯], rarely [r] English /ɹ/ Esperanto /ɾ/ Faroese /ɹ/ French [ʁ], [ʀ], [∅] Galician /ɾ/ German [ʀ], [ɐ̯], [r] Gutnish /ɻ/ Haitian /ɣ/ Hebrew romanization /ʁ/ Hopi /ʐ/ Indonesian /r/ Irish /ɾˠ/, /ɾʲ/ Italian /r/ Japanese (Hepburn) /ɾ/ Leonese /ɾ/ Malay /r/ Manx /r/ Māori /ɾ/ Norwegian [ɾ], [ʁ], [∅] Portuguese /ɾ/ or /ʁ/ Scottish Gaelic /ɾ/, /ɾʲ/ Sicilian /ɹ/ Spanish /ɾ/, /r/ Swedish [ɾ], [ʁ], [∅] Turkish /ɾ/ Venetian /r/ Vietnamese /z/ or /r/

### English

See also: [Rhoticity in English](/source/Rhoticity_in_English)

⟨R⟩ represents a [rhotic consonant](/source/Rhotic_consonant) in English, such as the [alveolar approximant](/source/Alveolar_approximant) (most varieties), [alveolar trill](/source/Alveolar_trill) (some British varieties), or the [retroflex approximant](/source/Retroflex_approximant) (some varieties in the [United States](/source/American_English), [South West England](/source/West_Country_dialects) and [Dublin](/source/Hiberno-English)).

In [non-rhotic](/source/Rhoticity_in_English) accents, it is not pronounced in certain positions, but can affect the pronunciation of the vowel that precedes it.

R is the [ninth most frequently used letter](/source/Letter_frequency) in the English language.

### Other languages

⟨R⟩ represents a [rhotic consonant](/source/Rhotic_consonant) in many languages, as shown in the table below.

Alveolar trill [r] Most languages such as Estonian, Finnish, Galician, German in some dialects, Hungarian, Icelandic, Indonesian, Italian, Czech, Javanese, Lithuanian, Latvian, Latin, Norwegian mostly in the northwest, Polish, Portuguese (traditional form), Romanian, Russian, Scots, Slovak, Swedish more frequent in northern and western dialects, as well as in Finland Swedish; Sundanese, Ukrainian, Welsh; also Catalan, Spanish and Albanian ⟨rr⟩ Alveolar approximant [ɹ] Dutch in some Netherlandic dialects (in specific positions of words), Faroese, Sicilian and Swedish, especially when in weakly articulated positions, such as word-final Alveolar flap / Alveolar tap [ɾ] Portuguese, Catalan, Spanish and Albanian ⟨r⟩; Turkish, Standard Dutch, Italian, Venetian, Galician, Leonese, Norwegian, Irish, Swedish and Māori Voiced retroflex fricative [ʐ] Norwegian around Tromsø; Spanish used as an allophone of /r/ in some South American accents; Swedish especially in Central Swedish dialects, such as the dialect in/around Stockholm; Hopi used before vowels, as in raana, "toad", from Spanish rana Retroflex approximant [ɻ] Gutnish; Hanyu Pinyin transliteration of Standard Chinese Retroflex flap [ɽ] Norwegian when followed by ⟨d⟩; Scottish English on occasion; Swedish when followed by ⟨d⟩ Uvular trill [ʀ] German stage standard; some Dutch dialects (in Brabant and Limburg, and some city dialects in the Netherlands); Swedish in southern Sweden; Norwegian in western and southern parts; Venetian only in the Venice area. Voiced uvular fricative [ʁ] North Mesopotamian Arabic, Judeo-Iraqi Arabic, German, Danish, French, standard European Portuguese ⟨rr⟩, standard Brazilian Portuguese ⟨rr⟩, Puerto Rican Spanish ⟨rr⟩ and 'r-' in western parts; Norwegian in western and southern parts; Swedish in southern dialects

Other languages may use the letter ⟨r⟩ in their alphabets (or Latin transliteration schemes) to represent rhotic consonants different from the alveolar trill. In [Haitian Creole](/source/Haitian_Creole), it represents a sound so weak that it is often written interchangeably with ⟨w⟩, e.g. 'Kweyol' for 'Kreyol'.

The doubled ⟨rr⟩ represents a trilled /r/ in [Albanian](/source/Albanian_language), [Aragonese](/source/Aragonese_language), [Asturian](/source/Asturian_language), [Basque](/source/Basque_language), [Catalan](/source/Catalan_language) and [Spanish](/source/Spanish_language).

Brazilian [Portuguese](/source/Portuguese_language) has a great number of allophones of /[ʁ](/source/Voiced_uvular_fricative)/, such as [[χ](/source/Voiceless_uvular_fricative)], [[h](/source/Voiceless_glottal_fricative)], [[ɦ](/source/Voiced_glottal_fricative)], [[x](/source/Voiceless_velar_fricative)], [[ɣ](/source/Voiced_velar_fricative)], [[ɹ](/source/Voiced_alveolar_approximant)] and [[r](/source/Voiced_alveolar_trill)]. The latter three ones can be used only in certain contexts ([[ɣ](/source/Voiced_velar_fricative)] and [[r](/source/Voiced_alveolar_trill)] as ⟨rr⟩; [[ɹ](/source/Voiced_alveolar_approximant)] in the syllable coda, as an allophone of /[ɾ](/source/Voiced_alveolar_tap_or_flap)/ according to the European Portuguese norm and /[ʁ](/source/Voiced_uvular_fricative)/ according to the Brazilian Portuguese norm). Usually at least two of them are present in a single dialect, such as [Rio de Janeiro](/source/Rio_de_Janeiro)'s [[ʁ](/source/Voiced_uvular_fricative)], [[χ](/source/Voiceless_uvular_fricative)], [[ɦ](/source/Voiced_glottal_fricative)] and, for a few speakers, [[ɣ](/source/Voiced_velar_fricative)].

### Other systems

The [International Phonetic Alphabet](/source/International_Phonetic_Alphabet) uses several variations of the letter to represent the different rhotic consonants; ⟨r⟩ represents the [alveolar trill](/source/Alveolar_trill).

## Other uses

Main article: [R (disambiguation)](/source/R_(disambiguation))

- An [R rating](/source/Motion_Picture_Association_film_rating_system) of the [Motion Picture Association film rating system](/source/Motion_Picture_Association_film_rating_system) denotes media, such as movies, that are intended for a restricted audience.

## Related characters

### Descendants and related characters in the Latin alphabet

- R with [diacritics](/source/Diacritic): [Ŕ ŕ](/source/%C5%94) [Ɍ ɍ](/source/R_with_stroke) [Ř ř](/source/%C5%98) [Ŗ ŗ](/source/Cedilla) [Ṙ ṙ](/source/Dot_(diacritic)) [Ȑ ȑ](/source/Double_grave_accent) [Ȓ ȓ](/source/%C8%92) [Ṛ ṛ](/source/%E1%B9%9A) [Ṝ ṝ](/source/%E1%B9%9C) [Ṟ ṟ](/source/%E1%B9%9E) [Ꞧ ꞧ](/source/%EA%9E%A6) [Ɽ ɽ](/source/R_with_tail) [R̃ r̃](/source/R%CC%83) [ᵲ](/source/%E1%B5%B2)[7] [ꭨ](/source/%EA%AD%A8)[8] [ᵳ](/source/%E1%B5%B3)[7] [ᶉ](/source/%E1%B6%89)[9]

- [International Phonetic Alphabet](/source/International_Phonetic_Alphabet)-specific symbols related to R: [𝼈](/source/Voiced_retroflex_lateral_flap)[10][11] [ɹ](/source/Voiced_alveolar_approximant) [ɺ](/source/Voiced_alveolar_lateral_flap) [ɾ](/source/Voiced_alveolar_tap_or_flap) [ɻ](/source/Voiced_retroflex_approximant) [ɽ](/source/Voiced_retroflex_flap) [ʀ](/source/Voiced_uvular_trill) [ʁ](/source/Voiced_uvular_fricative) [ʶ](/source/%CA%B6) [˞ ʴ](/source/R-colored_vowel)

- [IPA superscript letters](/source/International_Phonetic_Alphabet#Superscript_IPA):[12] 𐞦 𐞧 𐞨 𐞩 𐞪

- [Obsolete and nonstandard symbols in the International Phonetic Alphabet](/source/Obsolete_and_nonstandard_symbols_in_the_International_Phonetic_Alphabet): ɼ ɿ

- [Uralic Phonetic Alphabet](/source/Uralic_Phonetic_Alphabet)-specific symbols related to R:[13] - U+1D19 ᴙ LATIN LETTER SMALL CAPITAL REVERSED R - U+1D1A ᴚ LATIN LETTER SMALL CAPITAL TURNED R - U+1D3F ᴿ MODIFIER LETTER CAPITAL R - U+1D63 ᵣ LATIN SUBSCRIPT SMALL LETTER R

- [Teuthonista](/source/Teuthonista) phonetic transcription-specific symbols related to R:[14] - U+AB45 ꭅ LATIN SMALL LETTER STIRRUP R - U+AB46 ꭆ LATIN LETTER SMALL CAPITAL R WITH RIGHT LEG

- *[Anthropos](/source/Anthropos_phonetic_alphabet)* phonetic transcription:[14] - U+AB48 ꭈ LATIN SMALL LETTER DOUBLE R - U+AB49 ꭉ LATIN SMALL LETTER R WITH CROSSED-TAIL - U+AB4A ꭊ LATIN SMALL LETTER DOUBLE R WITH CROSSED-TAIL

- Otto Bremer's phonetic transcription:[14] - U+AB47 ꭇ LATIN SMALL LETTER R WITHOUT HANDLE - U+AB4B ꭋ LATIN SMALL LETTER SCRIPT R - U+AB4C ꭌ LATIN SMALL LETTER SCRIPT R WITH RING

- 𝼨 – ⟨R⟩ with mid-height left hook was used by the [British and Foreign Bible Society](/source/British_and_Foreign_Bible_Society) in the early 20th century for [romanization](/source/Romanization) of the [Malayalam](/source/Malayalam) language.[15]

- ⱹ – A turned ⟨r⟩ with a tail is used in the [Swedish Dialect Alphabet](/source/Swedish_Dialect_Alphabet)[16]

- Other variations of R used for phonetic transcription: 𝼕[10][11] 𝼖[10][11] [ʳ](/source/%CA%B3) [ʵ](/source/%CA%B5)

### Calligraphic variants in the Latin alphabet

- Ꝛ ꝛ – *[R rotunda](/source/R_rotunda)*

- Ꞃ ꞃ – *Insular r* ([Gaelic type](/source/Gaelic_type))

- ᫍ – Combining *Insular r*, as used in the *[Ormulum](/source/Ormulum)*[17]

### Ancestors and siblings in other alphabets

- 𐤓 – [Semitic](/source/Phoenician_alphabet) letter [Resh](/source/Resh), from which the following letters derive: - Ρ ρ – [Greek](/source/Greek_alphabet) letter [Rho](/source/Rho_(letter)), from which the following letters derive: - 𐌓 – [Old Italic](/source/Old_Italic_script) letter R, the ancestor of modern Latin ⟨R⟩ - ᚱ – [Runic](/source/Runes) letter [Raido](/source/Raido) - Р р – [Cyrillic](/source/Cyrillic) letter [Er](/source/Er_(Cyrillic)) - 𐍂 – [Gothic](/source/Gothic_alphabet) letter [Reda](https://en.wikipedia.org/w/index.php?title=Reda_(letter)&action=edit&redlink=1)

### Abbreviations, signs and symbols

- ℟ – symbol for [response](/source/Response_(liturgy)) in liturgy

- ℞ – [Medical prescription](/source/Medical_prescription)

- ® – [Registered trademark symbol](/source/Registered_trademark_symbol)

- ₹ – [Indian rupee sign](/source/Indian_rupee_sign)

## Other representations

### Computing

- U+0052 R LATIN CAPITAL LETTER R

- U+0072 r LATIN SMALL LETTER R

- U+FF32 Ｒ [FULLWIDTH LATIN CAPITAL LETTER R](/source/Half-width_and_full-width_forms)

- U+FF52 ｒ FULLWIDTH LATIN SMALL LETTER R

There are many [precomposed character](/source/Precomposed_character) forms of the letter with various [diacritics](/source/Diacritic).

### Other

NATO phonetic Morse code Romeo ▄ ▄▄▄ ▄ ⓘ

Signal flag Flag semaphore American manual alphabet (ASL fingerspelling) British manual alphabet (BSL fingerspelling) Braille dots-1235 Unified English Braille

## See also

- [Guttural R](/source/Guttural_R)

## References

1. **[^](#cite_ref-1)** "R", *[Oxford English Dictionary](/source/Oxford_English_Dictionary)* 2nd edition (1989); "ar", *op. cit*

1. **[^](#cite_ref-2)** ["Frequency Table"](https://web.archive.org/web/20171102005534/https://math.cornell.edu/~mec/2003-2004/cryptography/subs/frequencies.html). *Math.cornell.edu*. Archived from [the original](https://pi.math.cornell.edu/~mec/2003-2004/cryptography/subs/frequencies.html) on November 2, 2017. Retrieved November 7, 2017.

1. **[^](#cite_ref-3)** ["Analysis of selected contemporary Irish dialects"](http://digilib.k.utb.cz/bitstream/handle/10563/9938/kr%C3%B6merov%C3%A1_2009_bp.pdf?sequence=1) (PDF). *Digilib.k.utb.cz*. [Archived](https://web.archive.org/web/20170915204156/http://digilib.k.utb.cz/bitstream/handle/10563/9938/kr%C3%B6merov%C3%A1_2009_bp.pdf?sequence=1) (PDF) from the original on September 15, 2017. Retrieved November 7, 2017.

1. **[^](#cite_ref-4)** Hogarty, Steve (November 11, 2013). ["Losing My Voice - This Happened to Me"](https://web.archive.org/web/20190715114609/https://medium.com/this-happened-to-me/losing-my-voice-ef97a0c5e977). *Medium*. Archived from [the original](https://medium.com/this-happened-to-me/losing-my-voice-ef97a0c5e977) on July 15, 2019. Retrieved July 15, 2019.

1. **[^](#cite_ref-5)** ["Mind your 'P's and 'Q's – ore you'll get into trouble!"](https://irishwithian.wordpress.com/2018/12/19/mind-your-ps-and-qs-ore-youll-get-into-trouble/). *Irish with Ian*. December 19, 2018. [Archived](https://web.archive.org/web/20190715114607/https://irishwithian.wordpress.com/2018/12/19/mind-your-ps-and-qs-ore-youll-get-into-trouble/) from the original on July 15, 2019. Retrieved July 15, 2019.

1. **[^](#cite_ref-6)** ["A Word A Day: Dog's letter"](https://wordsmith.org/words/dogs_letter.html). *Wordsmith.org*. [Archived](https://web.archive.org/web/20120314054240/http://www.wordsmith.org/words/dogs_letter.html) from the original on March 14, 2012. Retrieved January 17, 2012.

1. ^ [***a***](#cite_ref-L203174_7-0) [***b***](#cite_ref-L203174_7-1) Constable, Peter (September 30, 2003). ["L2/03-174R2: Proposal to Encode Phonetic Symbols with Middle Tilde in the UCS"](https://www.unicode.org/L2/L2003/03174r2-mid-tilde.pdf) (PDF). *Unicode.org*. [Archived](https://web.archive.org/web/20171011013938/http://www.unicode.org/L2/L2003/03174r2-mid-tilde.pdf) (PDF) from the original on October 11, 2017. Retrieved March 24, 2018.

1. **[^](#cite_ref-l219075_8-0)** Everson, Michael (May 5, 2019). ["L2/19-075R: Proposal to add six phonetic characters for Scots to the UCS"](https://www.unicode.org/L2/L2019/19075r-n5036-scots-phonetics.pdf) (PDF). [Archived](https://web.archive.org/web/20190613190054/http://www.unicode.org/L2/L2019/19075r-n5036-scots-phonetics.pdf) (PDF) from the original on June 13, 2019. Retrieved March 17, 2020.

1. **[^](#cite_ref-9)** Constable, Peter (April 19, 2004). ["L2/04-132 Proposal to add additional phonetic characters to the UCS"](https://www.unicode.org/L2/L2004/04132-n2740-phonetic.pdf) (PDF). *Unicode.org*. [Archived](https://web.archive.org/web/20171011014355/http://www.unicode.org/L2/L2004/04132-n2740-phonetic.pdf) (PDF) from the original on October 11, 2017. Retrieved March 24, 2018.

1. ^ [***a***](#cite_ref-L220125_10-0) [***b***](#cite_ref-L220125_10-1) [***c***](#cite_ref-L220125_10-2) Miller, Kirk (July 11, 2020). ["L2/20-125R: Unicode request for expected IPA retroflex letters and similar letters with hooks"](https://www.unicode.org/L2/L2020/20125r-ipa-retroflex.pdf) (PDF).

1. ^ [***a***](#cite_ref-L221021_11-0) [***b***](#cite_ref-L221021_11-1) [***c***](#cite_ref-L221021_11-2) Anderson, Deborah (December 7, 2020). ["L2/21-021: Reference doc numbers for L2/20-266R "Consolidated code chart of proposed phonetic characters" and IPA etc. code point and name changes"](https://www.unicode.org/L2/L2021/21021-consolidated-ipa.pdf) (PDF).

1. **[^](#cite_ref-L220252_12-0)** Miller, Kirk; Ashby, Michael (November 8, 2020). ["L2/20-252R: Unicode request for IPA modifier-letters (a), pulmonic"](https://www.unicode.org/L2/L2020/20252r-mod-ipa-a.pdf) (PDF).

1. **[^](#cite_ref-13)** [Everson, Michael](/source/Michael_Everson); et al. (March 20, 2002). ["L2/02-141: Uralic Phonetic Alphabet characters for the UCS"](https://www.unicode.org/L2/L2002/02141-n2419-uralic-phonetic.pdf) (PDF). *Unicode.org*. [Archived](https://web.archive.org/web/20180219081033/http://www.unicode.org/L2/L2002/02141-n2419-uralic-phonetic.pdf) (PDF) from the original on February 19, 2018. Retrieved March 24, 2018.

1. ^ [***a***](#cite_ref-Teuthonista_14-0) [***b***](#cite_ref-Teuthonista_14-1) [***c***](#cite_ref-Teuthonista_14-2) Everson, Michael; Dicklberger, Alois; Pentzlin, Karl; Wandl-Vogt, Eveline (June 2, 2011). ["L2/11-202: Revised proposal to encode "Teuthonista" phonetic characters in the UCS"](https://www.unicode.org/L2/L2011/11202-n4081-teuthonista.pdf) (PDF). *Unicode.org*. [Archived](https://web.archive.org/web/20171011012426/http://www.unicode.org/L2/L2011/11202-n4081-teuthonista.pdf) (PDF) from the original on October 11, 2017. Retrieved March 24, 2018.

1. **[^](#cite_ref-L221156_15-0)** Miller, Kirk; Rees, Neil (July 16, 2021). ["L2/21-156: Unicode request for legacy Malayalam"](https://www.unicode.org/L2/L2021/21156-legacy-malayalam.pdf) (PDF).

1. **[^](#cite_ref-16)** Lemonen, Therese; Ruppel, Klaas; Kolehmainen, Erkki I.; Sandström, Caroline (January 26, 2006). ["L2/06-036: Proposal to encode characters for Ordbok över Finlands svenska folkmål in the UCS"](https://www.unicode.org/L2/L2006/06036-lma-proposal.pdf) (PDF). *Unicode.org*. [Archived](https://web.archive.org/web/20170706090306/http://www.unicode.org/L2/L2006/06036-lma-proposal.pdf) (PDF) from the original on July 6, 2017. Retrieved March 24, 2018.

1. **[^](#cite_ref-L220268_17-0)** Everson, Michael; West, Andrew (October 5, 2020). ["L2/20-268: Revised proposal to add ten characters for Middle English to the UCS"](https://www.unicode.org/L2/L2020/20268-n5145-ormulum.pdf) (PDF).

## External links

- Media related to [R](https://commons.wikimedia.org/wiki/R) at Wikimedia Commons

- The dictionary definition of [*R*](https://en.wiktionary.org/wiki/R) at Wiktionary

- The dictionary definition of [*r*](https://en.wiktionary.org/wiki/r) at Wiktionary

v t e The letter R General Rhotic consonants (R-like sounds) Perception of English /r/ and /l/ by Japanese speakers Pronunciation of English /r/ Rhoticity in English R-colored vowel Rhotacism Guttural R Linking and intrusive R Pronunciations Voiceless alveolar trill [r̥] Voiced alveolar trill [r] Voiced alveolar or postalveolar approximant [ɹ] Voiceless alveolar tap [ɾ̥] Voiced alveolar tap [ɾ] Voiced alveolar lateral flap [ɺ] Voiced retroflex approximant [ɻ] Voiced retroflex flap [ɽ] Voiced retroflex trill [ɽr] Voiced velar approximant [ɰ] Voiced velar bunched approximant [ɹ̈] Voiceless velar fricative [x] Voiced velar fricative [ɣ] Voiceless uvular trill [ʀ̥] Voiced uvular trill [ʀ] Voiceless uvular fricative [χ] Voiced uvular fricative [ʁ] Voiced pharyngeal fricative [ʕ] Voiceless glottal fricative [h] Voiced glottal fricative [ɦ] Variations Ꝛꝛ (R rotunda) Ꞃꞃ (Insular) Ɽɽ (R with tail) Ɍɍ (R with stroke) Ʀʀ Ȑȑ Ŕŕ Ŗŗ Řř Ȓȓ R̃r̃ Ṙṙ Ṛṛ R̄r̄ Ṝṝ Ṟṟ Rd Rh Rl Rm Rn Rp Rr Rs Rt Rw Rz Rnd ᚱ (Raidô) ℝ (Real number) ® (Registered trademark symbol) Ⓡ (Enclosed R) ℞ (Medical prescription)

v t e Latin script History Spread Romanization Roman numerals Ligatures Alphabets (list) Classical Latin alphabet ISO basic Latin alphabet Phonetic alphabets International Phonetic Alphabet X-SAMPA Spelling alphabet Letters (list) Letters of the ISO basic Latin alphabet Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz Additional Latin letters Æ æ Ɑ ɑ Ʌ ʌ Ꞵ ꞵ Ð ð Ɛ ɛ Ə ə Ǝ ə Ɣ ɣ Ƣ ƣ Ɩ ɩ Ɥ ɥ Ꟛ ꟛ Ŋ ŋ Œ œ Ɔ ɔ Ɤ ɤ Kʼ ĸ Ʀ ʀ ẞ ß Ʃ ʃ Ɯ ɯ Ʊ ʊ Ꞷ ꞷ Ʋ ʋ Ƿ ƿ Ȝ ȝ ϴ θ Ʒ ʒ Ƹ ƹ Þ þ Ȣ ȣ Ꭓ ꭓ Ɂ ʔ ɂ ꟎ ʕ ꟏ ǀ ǁ ǂ ǃ ʘ ʻ ʼ Ꞌ ꞌ Ƨ ƨ Ꜫ ꜫ Ꜭ ꜭ Ƽ ƽ Ƅ ƅ 7 Letter R with diacritics Ŕŕ Řř Ṙṙ Ŗŗ Ȑȑ Ȓȓ Ṛṛ Ṝṝ Ṟṟ R̃r̃ Ɍɍ Ꞧꞧ Ɽɽ ᵲ ᶉ ꭉ 𝼨 Multigraphs Digraphs Ch Dz Dž Gh IJ Lj Ll Ly Nh Nj Ny Sh Sz Th Trigraphs dzs eau Tetragraphs ough Keyboard layouts (list) QWERTY QWERTZ AZERTY Dvorak Colemak BÉPO Neo Historical standards ISO/IEC 646 Western Latin character sets Current standards Unicode DIN 91379: Unicode subset for Europe Lists Precomposed Latin characters in Unicode Letters used in mathematics, science, and engineering List of typographical symbols and punctuation marks Diacritics Palaeography

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Adapted from the Wikipedia article [R](https://en.wikipedia.org/wiki/R) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/R?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.