|IPA Number||177, 201|
|Unicode (hex)||U+01C0 U+0287|
|Voiced dental click|
|Dental nasal click|
In English, the tut-tut! (British spelling, "tutting") or tsk! tsk! (American spelling, "tsking") sound used to express disapproval or pity is an unreleased dental click, although it is not a lexical phoneme (a sound that distinguishes words) in English but a paralinguistic speech-sound. Similarly paralinguistic usage of dental clicks is made in certain other languages, but the meaning thereof differs widely between many of the languages (e.g., affirmation in Somali but negation in many varieties of Arabic).
The symbol in the International Phonetic Alphabet that represents the place of articulation of these sounds is ⟨ǀ⟩, a vertical bar. Prior to 1989, ⟨ʇ⟩ was the IPA letter for the dental clicks. It is still occasionally used where the symbol ⟨ǀ⟩ would be confounded with other symbols, such as prosody marks, or simply because in many fonts the vertical bar is indistinguishable from an el or capital i. Either letter may be combined with a second letter to indicate the manner of articulation, though this is commonly omitted for tenuis clicks.
In official IPA transcription, the click letter is combined with a ⟨k ɡ ŋ q ɢ ɴ⟩ via a tie bar, though ⟨k⟩ is frequently omitted. Many authors instead use a superscript ⟨k ɡ ŋ q ɢ ɴ⟩ without the tie bar, again often neglecting the ⟨k⟩. Either letter, whether baseline or superscript, is usually placed before the click letter, but may come after when the release of the velar or uvular occlusion is audible. A third convention is the click letter with diacritics for voicelessness, voicing and nasalization; it does not distinguish velar from uvular dental clicks. Common dental clicks are:
|Trans. I||Trans. II||Trans. III||Description|
|⟨k͜ǀ⟩||⟨ᵏǀ⟩||⟨ǀ⟩||tenuis dental click|
|⟨k͜ǀʰ⟩||⟨ᵏǀʰ⟩||⟨ǀʰ⟩||aspirated dental click|
|⟨ɡ͜ǀ⟩||⟨ᶢǀ⟩||⟨ǀ̬⟩||voiced dental click|
|⟨ŋ͜ǀ⟩||⟨ᵑǀ⟩||⟨ǀ̃⟩||dental nasal click|
|⟨ŋ͜ǀ̥ʰʰ⟩||⟨ᵑǀ̥ʰʰ⟩||⟨ǀ̥̃ʰʰ⟩||aspirated dental nasal click|
|⟨ŋ͜ǀˀ⟩||⟨ᵑǀˀ⟩||⟨ǀ̃ˀ⟩||glottalized dental nasal click|
|⟨q͜ǀ⟩||⟨ǀ⟩||tenuis dental click|
|⟨q͜ǀʰ⟩||⟨ǀʰ⟩||aspirated dental click|
|⟨ɢ͜ǀ⟩||⟨ǀ⟩||voiced dental click|
|⟨ɴ͜ǀ⟩||⟨ᶰǀ⟩||dental nasal click|
|⟨ɴ͜ǀ̥ʰʰ⟩||⟨ᶰǀ̥ʰʰ⟩||aspirated dental nasal click|
|⟨ɴ͜ǀˀ⟩||⟨ᶰǀˀ⟩||glottalized dental nasal click|
The last is what is heard in the sound sample at right, as non-native speakers tend to glottalize clicks to avoid nasalizing them.
In the orthographies of individual languages, the letters and digraphs for dental clicks may be based on either the vertical bar symbol of the IPA, ⟨ǀ⟩, or on the Latin ⟨c⟩ of Bantu convention. Nama and most Saan languages use the former; Naro, Sandawe, and Zulu use the latter.
WALSwas invoked but never defined (see the help page).