A voiced alveolar approximant is a type of consonantal sound used in some spoken languages. It is familiar to most English-speakers as the "r" sound in "rose" (though typically § postalveolar). The symbol in the International Phonetic Alphabet that represents it is ⟨ɹ⟩, the lowercase Latin letter r rotated 180 degrees.
Phonetic realisation of /r/, especially in some Eastern Dialects and sometimes in conjunct before consonants. Corresponds to [r ~ ɾ] in others. See Bengali phonology
Allophone of the more usual and traditional flap or trill [ɾ~r] and is sometimes thus pronounced by some younger speakers due to exposure to mainstream English.
Some languages have a voiced (post)alveolar approximant that is acoustically distinct from a typical [ɹ], which has variously been described as being '[z]-like,'[13] 'non-rhotic',[14] or 'non-sulcalized'.[15] Some authors have reported the distinction as one of active articulation, with the formerly mentioned sound being classified as laminal, while a typical [ɹ] is distinguished as apical;[16] though other authors have reported sounds of this type as being explicitly apical.[17] Somewhat less controversially, the distinction may also be made as a featural classing, between a 'rhotic approximant' and a 'spirant approximant'[18] or 'frictionless continuant';[16][19][20] these two latter terms are now used mostly synonymously, and are explicitly defined as being non-rhotic, non-lateral, and non-semivowel approximants.
The International Phonetic Alphabet has no symbol to represent this sound, but possible transcriptions with diacritics include ⟨z̞⟩ (a lowered[z]) and ⟨ð̠˕⟩ (a lowered and retracted[ð]), both of which have been used in literature. Several symbols have been proposed to represent this sound, but none have become widely accepted. In Sinological circles, the symbol ⟨ɿ⟩ has also been used for this sound.[17]
Corresponds to /rr/ in standard Italian, as well as word-initial /r/. Can be alveolar [z̞] or postalveolar [ʒ̞], depending on the speaker, both of which may also be geminated. Described as 'non-sulcalized sonorants', articulated without contact, though may retain some degree of frication; may be closer to a non-sibilant fricative, depending on the speaker.[15]
Usually apical.[24] In free variation with a weak fricative [ð̠];[25] variably removed from the front teeth, up to (nearly) spot on [ð̞].[26] See Icelandic phonology.
Realized as [z̞z] when word initial, geminate[z̞ː] when presyllabic, variable when medial, and plain [z̞] when word final. Phonemically transcribed as /ž/ or /žž/. Devoiced to [s̞] following a voiceless bilabial plosive /p/.[13] See Miyakoan language § Phonology
The most common sound represented by the letter r in English is the voiced postalveolar approximant, pronounced further back than a typical [ɹ] and transcribed more precisely in IPA as ⟨ɹ̠⟩, but ⟨ɹ⟩ is often used for convenience in its place. For further ease of typesetting, English phonemic transcriptions might use the symbol ⟨r⟩ even though this symbol represents the alveolar trill in phonetic transcription.
^Árnason (2011:106, 108): "[It is] doubtful whether the voiced fricatives are to be classified as such, rather than as approximants." "The weakness of the articulation of the voiced sounds makes them at times more like approximants, and they are very easily deleted intervocalically in natural speech[.]"
Ball, Martin J.; Rahilly, Joan; Lowry, Orla; Bessell, Nicola; Lee, Alice (2020), Phonetics for Speech Pathology, Communication Disorders and Clinical Linguistics (3rd ed.), University of Toronto Press, ISBN978-1781791790
Ball, Martin J. (2025), "Additional Phonetic Symbols for the Transcription of Typical and Atypical Speech", Journal of Connected Speech, 1 (1): 106–119, doi:10.3138/jcspeech.29303
Browman, C.P.; Goldstein, L. (1995), "Gestural syllable position in American English", in Bell-Berti, F.; Raphael, L.J. (eds.), Producing Speech: Contemporary Issues: for Katherine Safford Harris, New York: American Institute of Physics, pp. 9–33
Fougeron, C. (1999), "Prosodically conditioned articulatory variation: A Review", UCLA Working Papers in Phonetics, vol. 97, pp. 1–73
Grønnum, Nina (2003), "Why are the Danes so hard to understand?", in Jacobsen, Henrik Galberg; Bleses, Dorthe; Madsen, Thomas O.; Thomsen, Pia (eds.), Take Danish - for instance: linguistic studies in honour of Hans Basbøll, presented on the occasion of his 60th birthday, Odense: Syddansk Universitetsforlag, pp. 119–130
Hallé, Pierre A.; Best, Catherine T.; Levitt, Andrea (1999), "Phonetic vs. phonological influences on French listeners' perception of American English approximants", Journal of Phonetics, 27 (3): 281–306, doi:10.1006/jpho.1999.0097
Puech, Gilbert (2013), "Prime constituents of Maltese sounds", in Borg, Albert; Caruana, Sandro; Vella, Alexandra (eds.), Perspectives on Maltese Linguistics, Berlin: Akademie Verlag, pp. 61–88, ISBN978-3-05-006275-4
Recasens, Daniel (2004), "The effect of syllable position on consonant reduction (evidence from Catalan consonant clusters)", Journal of Phonetics, 32 (3): 435–453, doi:10.1016/j.wocn.2004.02.001
Rögnvaldsson, Eiríkur (2017) [2013]. "Hljóðkerfi og orðhlutakerfi Íslensku" [Phonology and phonotactics of Icelandic] (PDF) (in Icelandic). Archived(PDF) from the original on 18 Sep 2024.
Zawadzki, P.A.; Kuehn, D.P. (1980), "A cineradiographic study of static and dynamic aspects of American English /r/", Phonetica, 37 (4): 253–266, doi:10.1159/000259995, PMID7443796, S2CID46760239
