Voiceless alveolar tap and flap

The voiceless alveolar tap or flap is rare as a phoneme. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɾ̥⟩, a combination of the letter for the voiced alveolar tap/flap and a diacritic indicating voicelessness. The equivalent X-SAMPA symbol is 4_0.

The voiceless alveolar tapped fricative reported from some languages is actually a very brief voiceless alveolar non-sibilant fricative.