The terms tap and flap are often used interchangeably. Peter Ladefoged proposed the distinction that a tap strikes its point of contact directly, as a very brief stop, and a flap strikes the point of contact tangentially: "Flaps are most typically made by retracting the tongue tip behind the alveolar ridge and moving it forward so that it strikes the ridge in passing."[1] That distinction between the alveolar tap and flap could be written in non-standard IPA with the tap as ⟨ɾ⟩ and the flap as ⟨ɽ⟩, the retroflex letter being used for the one that starts with the tongue tip curled back behind the alveolar ridge,[citation needed] though it could be written less ambiguously with the Americanist letter ⟨ᴅ⟩ (or IPA ⟨d̮⟩) for the tap and standard IPA ⟨ɾ⟩ for the flap. The distinction is noticeable in the speech of some American English speakers in distinguishing the words "potty" (tap) and "party" (flap).[citation needed]
For linguists who do not make the distinction, alveolars and dentals are typically called taps and other articulations flaps. No language contrasts a tap and a flap at the same place of articulation.
As a phoneme, the sound is analyzed as a rhotic consonant. In languages for which the segment is present but not phonemic, it is often an allophone of either an alveolar stop ([t], [d], or both) or a rhotic consonant.
If an alveolar flap is the only rhotic consonant in the language, it may be transcribed with ⟨r⟩ in broad transcription, despite that symbol technically representing a trill.
A voiced alveolar tapped fricative is reported from some languages, which is a very brief voiced alveolar non-sibilant fricative.
Its manner of articulation is tap or flap, which means it is produced with a single contraction of the muscles so that the tongue makes very brief contact.
Intervocalic allophone of /t/ and /d/, present in many dialects. In Local Dublin it can be [ɹ] instead, unlike New and Mainstream. See English phonology and Flapping.
Apical postalveolar. Allophone of /l/, medially between vowels within the morpheme, and finally in the morpheme before a following vowel in the same word. It can be a postalveolar trill or simply [l] instead.[18]
Both the lenited and non-initial broad form of r. Often transcribed simply as /r/. The initial unlenited broad form is a trill [rˠ], while the slender form is [ɾʲ] ([ð] in some dialects). See Scottish Gaelic phonology.
Found in various Xuanzhou localities, with that of Tongling provided. Tones not notated due to complexity of tone sandhi. Equivalent to /d/ in other lects.[32]
Its manner of articulation is tap or flap, which means it is produced with a single contraction of the muscles so that the tongue makes very brief contact.
Its phonation is voiced, which means the vocal cords vibrate during the articulation.
It is a nasal consonant, which means air is exclusively allowed to escape through the nose for nasal stops; otherwise, in addition to through the mouth.
It is a median consonant, which means it is produced by directing the airstream down the midline of the tongue, rather than to the sides.
↑Kristoffersen, Gjert (2015). "En innføring i norsk fonologi"[An introduction to Norwegian phonology](PDF) (in Norwegian) (4ed.). University of Bergen. p.21. Archived from the original(PDF) on 2018-10-24. Retrieved 2020-07-09. I østlandsk er denne lyden normalt en såkalt tapp
Carbonell, Joan F.; Llisterri, Joaquim (1992), "Catalan", Journal of the International Phonetic Association, 22 (1–2): 53–56, doi:10.1017/S0025100300004618, S2CID249411809
Cox, Felicity; Palethorpe, Sallyanne (2007), "Australian English", Journal of the International Phonetic Association, 37 (3): 341–349, doi:10.1017/S0025100307003192
Martínez-Celdrán, Eugenio; Fernández-Planas, Ana Ma.; Carrera-Sabaté, Josefina (2003), "Castilian Spanish", Journal of the International Phonetic Association, 33 (2): 255–259, doi:10.1017/S0025100303001373
Masica, Colin (1991). The Indo-Aryan Languages. Cambridge Language Surveys. Cambridge: Cambridge University Press. ISBN978-0-521-29944-2.
Sjoberg, Andrée F. (1963), Uzbek Structural Grammar, Uralic and Altaic Series, vol.18, Bloomington: Indiana University
Šuštaršič, Rastislav; Komar, Smiljana; Petek, Bojan (1999), "Slovene", Handbook of the International Phonetic Association: A Guide to the Use of the International Phonetic Alphabet, pp.135–139, ISBN0-521-65236-7{{citation}}: CS1 maint: work parameter with ISBN (link)
Trudgill, Peter; Hannah, Jean (2002), International English: A Guide to the Varieties of Standard English, 4th ed, p.24
Valentin-Marquez, Wilfredo (2008), "Doing Being Boricua: Perceptions of National Identity and the Sociolinguistic Distribution of Liquid Variables in Puerto Rican Spanish", Studies in Hispanic and Lusophone Linguistics, 1 (2): 451–454, doi:10.1515/shll-2008-1031, S2CID147068871
Valenzuela, Pilar M.; Márquez Pinedo, Luis; Maddieson, Ian (2001), "Shipibo", Journal of the International Phonetic Association, 31 (2): 281–285, doi:10.1017/S0025100301002109