R

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18th letter of the latin alphabet

title: "R" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["iso-basic-latin-letters"] description: "18th letter of the latin alphabet" topic_path: "general/iso-basic-latin-letters" source: "https://en.wikipedia.org/wiki/R" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary 18th letter of the latin alphabet ::

::data[format=table title="Infobox grapheme"]

Field	Value
name	R
letter	R r
script	latin script
type	Alphabet
typedesc	ic
language	Latin language
phonemes
unicode	U+0052, U+0072
alphanumber	18
fam1	D1
fam2	[[Image:Proto-semiticR-01.svg
fam3	[[Image:phoenician res.svg
fam4	Ρ ρ
fam5	𐌓 [[File:Greek Rho 06.svg
fam6	[[File:Greek Rho 01.svg
fam7	[[File:Greek Rho 03.svg
fam8	[[File:Greek Rho 03.svg
usageperiod	50 CE to present
children
sisters
associates
direction	Left-to-right
image	File:Latin_letter_R.svg
imageclass	skin-invert-image
::

R, or r, is the eighteenth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ar (pronounced ), plural ars.

The letter is the eighth most common letter in English and the fourth-most common consonant, after , , and .

Name

The name of the letter in Latin was er (), following the pattern of other letters representing continuants, such as , , , , and . This name is preserved in French and many other languages. In Middle English, the name of the letter changed from to , following a pattern exhibited in many other words such as farm (compare French ferme) and star (compare German Stern).

In Hiberno-English, the letter is called or , somewhat similar to oar, ore, orr.

Dog's letter 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 that was trilled to sound like a growling dog, a spoken style referred to as vōx canīna 'dog voice' (e.g. in Spanish perro 'dog').

History

::data[format=table] | Egyptian | Proto-Sinaitic | Phoenician Resh | Western Greek Rho | Etruscan R | Latin R | |---|---|---|---|---|---| | D1 | [[File:Proto-semiticR-01.svg|class=skin-invert-image|x40px]] | [[File:PhoenicianR-01.png|class=skin-invert-image|x30px]] | [[File:Greek Rho pointed.svg|class=skin-invert-image|x40px]] | [[File:EtruscanR-03.svg|class=skin-invert-image|x30px]] | [[File:Capitalis monumentalis R.SVG|class=skin-invert-image|x30px]] | ::

Antiquity

::figure[src="https://upload.wikimedia.org/wikipedia/commons/d/db/Prognatus.png" caption="P}} at the same time still retains its archaic shape distinguishing it from Greek or Old Italic ''rho''."] ::

The letter is believed to derive ultimately from an image of a head, used in Semitic alphabets for the sound because the word for 'head' was rêš or similar in most Semitic languages. The word became the name of the letter, as an example of acrophony.

It developed into Greek ῥῶ (grc) and Latin . The descending diagonal stroke develops as a graphic variant in some Western Greek alphabets (writing rho as ⟨[[File:Greek Rho 03.svg|class=skin-invert-image|20px| ]]⟩), but it was not adopted in most Old Italic alphabets; most Old Italic alphabets show variants of their rho between a and a 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 and the Forum inscription, still write using the shape of the letter. The Lapis Satricanus inscription shows the form of the Latin alphabet around 500 BC. Here, the rounded, closing ⟨Π⟩ shape of the and the shape of the have become difficult to distinguish. The descending stroke of the Latin letter has fully developed by the 3rd century BC, as seen in the Tomb of the Scipios sarcophagus inscriptions of that era. From , the letter would be written with its loop fully closed, assuming the shape formerly taken by .

Cursive

::figure[src="https://upload.wikimedia.org/wikipedia/commons/8/83/Caslon-specimen-1763-double-pica-black.jpg" caption="18th-century example of use of ''r rotunda'' in English blackletter typography"] ::

::figure[src="https://upload.wikimedia.org/wikipedia/commons/b/b6/Luca_Pacioli,_De_divina_proportione,_Letter_R.jpg" caption="R}} from the alphabet by [[Luca Pacioli]], in ''[[De divina proportione]]'' (1509)"] ::

The minuscule form developed through several variations on the capital form. Along with Latin minuscule writing in general, it developed ultimately from Roman cursive via the uncial script of Late Antiquity into the 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 , known as r rotunda , was used in the sequence , bending the shape of the to accommodate the bulge of the as in , as opposed to . Later, the same variant was also used where followed other lower case letters with a rounded loop towards the right, such as with , , , as well as to write the geminate as . Use of r rotunda was mostly tied to blackletter typefaces, and the glyph fell out of use along with blackletter fonts in English language contexts mostly by the 18th century.

Insular script used a minuscule which retained two downward strokes, but which did not close the loop, known as the Insular r ; this variant survives in the Gaelic type popular in Ireland until the mid-20th century, but has become largely limited to a decorative function.

Use in writing systems

::data[format=table title="Pronunciation of {{angbr|r}} by language"]

Orthography	Phonemes	Albanian	Arabic romanization	Aragonese	Asturian	Basque	Catalan	(Pinyin)	Danish	Dutch	English	Esperanto	Faroese	French	Galician	German	Gutnish	Haitian	Hebrew romanization	Hopi	Indonesian	Irish	Italian	Japanese (Hepburn)	Leonese	Malay	Manx	Māori	Norwegian	Portuguese	Scottish Gaelic	Sicilian	Spanish	Swedish	Turkish	Venetian	Vietnamese

or or
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or
or
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or
::

English

represents a rhotic consonant in English, such as the alveolar approximant (most varieties), alveolar trill (some British varieties), or the retroflex approximant (some varieties in the United States, South West England and Dublin).

In non-rhotic 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 in the English language.

Other languages

represents a rhotic consonant in many languages, as shown in the table below.

::data[format=table]

Voiced uvular fricative	[[File:Voiced uvular fricative.ogg]]	North Mesopotamian Arabic, Judeo-Iraqi Arabic, German, Danish, French, standard European Portuguese , standard Brazilian Portuguese , Puerto Rican Spanish and 'r-' in western parts; Norwegian in western and southern parts; Swedish in southern dialects
::

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

The doubled represents a trilled in Albanian, Aragonese, Asturian, Basque, Catalan and Spanish.

Brazilian Portuguese has a great number of allophones of , such as , , , , , and . The latter three ones can be used only in certain contexts ( and as ; in the syllable coda, as an allophone of according to the European Portuguese norm and according to the Brazilian Portuguese norm). Usually at least two of them are present in a single dialect, such as Rio de Janeiro's , , and, for a few speakers, .

Other systems

The International Phonetic Alphabet uses several variations of the letter to represent the different rhotic consonants; represents the alveolar trill.

Other uses

Main article: R (disambiguation)

An R rating of the 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: Ŕ ŕ Ɍ ɍ Ř ř Ŗ ŗ Ṙ ṙ Ȑ ȑ Ȓ ȓ Ṛ ṛ Ṝ ṝ Ṟ ṟ Ꞧ ꞧ Ɽ ɽ R̃ r̃ ᵲ ꭨ ᵳ ᶉ
International Phonetic Alphabet-specific symbols related to R: ʶ ˞ ʴ
IPA superscript letters: 𐞦 𐞧 𐞨 𐞩 𐞪
Obsolete and nonstandard symbols in the International Phonetic Alphabet: ɼ ɿ
Uralic Phonetic Alphabet-specific symbols related to R:
Teuthonista phonetic transcription-specific symbols related to R:
Anthropos phonetic transcription:
Otto Bremer's phonetic transcription:
𝼨 – with mid-height left hook was used by the British and Foreign Bible Society in the early 20th century for romanization of the Malayalam language.
ⱹ – A turned with a tail is used in the Swedish Dialect Alphabet
Other variations of R used for phonetic transcription: 𝼕 𝼖 ʳ ʵ

Calligraphic variants in the Latin alphabet

Ꝛ ꝛ – R rotunda
Ꞃ ꞃ – Insular r (Gaelic type)
ᫍ – Combining Insular r, as used in the Ormulum

Ancestors and siblings in other alphabets

𐤓 – Semitic letter Resh, from which the following letters derive:
- Ρ ρ – Greek letter Rho, from which the following letters derive:
  - 𐌓 – Old Italic letter R, the ancestor of modern Latin
    - ᚱ – Runic letter Raido
  - Р р – Cyrillic letter Er
  - 𐍂 – Gothic letter Reda

Abbreviations, signs and symbols

℟ – symbol for response in liturgy
℞ – Medical prescription
® – Registered trademark symbol
₹ – Indian rupee sign

Other representations

Computing

There are many precomposed character forms of the letter with various diacritics.

Other

References

"R", ''[[Oxford English Dictionary]]'' 2nd edition (1989); "ar", ''op. cit''
"Frequency Table".
"Analysis of selected contemporary Irish dialects".
Hogarty, Steve. (November 11, 2013). "Losing My Voice - This Happened to Me".
(December 19, 2018). "Mind your 'P's and 'Q's – ore you'll get into trouble!". Irish with Ian.
"A Word A Day: Dog's letter".
Constable, Peter. (2003-09-30). "L2/03-174R2: Proposal to Encode Phonetic Symbols with Middle Tilde in the UCS".
Everson, Michael. (2019-05-05). "L2/19-075R: Proposal to add six phonetic characters for Scots to the UCS".
Constable, Peter. (2004-04-19). "L2/04-132 Proposal to add additional phonetic characters to the UCS".
Miller, Kirk. (2020-07-11). "L2/20-125R: Unicode request for expected IPA retroflex letters and similar letters with hooks".
Anderson, Deborah. (2020-12-07). "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".
(2020-11-08). "L2/20-252R: Unicode request for IPA modifier-letters (a), pulmonic".
(2002-03-20). "L2/02-141: Uralic Phonetic Alphabet characters for the UCS".
(2011-06-02). "L2/11-202: Revised proposal to encode "Teuthonista" phonetic characters in the UCS".
(2021-07-16). "L2/21-156: Unicode request for legacy Malayalam".
(2006-01-26). "L2/06-036: Proposal to encode characters for Ordbok över Finlands svenska folkmål in the UCS".
(2020-10-05). "L2/20-268: Revised proposal to add ten characters for Middle English to the UCS".

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::

R

Name

History

Antiquity

Cursive

Use in writing systems

English

Other languages

represents a rhotic consonant in many languages, as shown in the table below.

Other systems

Other uses

Related characters

Descendants and related characters in the Latin alphabet

Uralic Phonetic Alphabet-specific symbols related to R:

Teuthonista phonetic transcription-specific symbols related to R:

Anthropos phonetic transcription:

Otto Bremer's phonetic transcription:

Calligraphic variants in the Latin alphabet

Ancestors and siblings in other alphabets

Abbreviations, signs and symbols

Other representations

Computing

Other

References

References