Usage notes

This is a modifier letter that combines with a voiceless, voiced or nasal letter of the appropriate place of articulation, e.g.:

• p˿ b˿ m˿ (bilabial clicks)
• t˿ d˿ n˿ (dental clicks)
• ṭ˿ ḍ˿ ṇ˿ (alveolar clicks)
• k˿ g˿ ŋ˿ ("velar" clicks – as with the old IPA letter ⟨ʞ⟩, these are possibly palatal clicks (current IPA ⟨ǂ⟩).)

Possibly to distinguish clicks from implosives, starting in the 1970s the Greek letters π τ κ were also defined as (voiced) clicks, with small-capital versions as voiceless clicks.