The symbol in the International Phonetic Alphabet ǀ, a vertical bar, represents either the forward articulation of these sounds or a tenuis dental click, depending on the school of phonetics. This is combined with a symbol for the rear articulation to represent other dental clicks. Attested dental clicks include:

• [ǀ], [k͡ǀ], or [ǀ͡k] voiceless velar dental click (may also be aspirated, ejective, affricated, etc.)
• [ɡ͡ǀ] or [ǀ͡ɡ] voiced velar dental click (may also be breathy voiced, affricated, etc.)
• [ŋ͡ǀ] or [ǀ͡ŋ] nasal velar dental click (may also be voiceless, aspirated, etc.)
• [q͡ǀ] or [ǀ͡q] voiceless uvular dental click
• [ɢ͡ǀ] or [ǀ͡ɢ] voiced uvular dental click (commonly prenasalized)
• [ɴ͡ǀ] or [ǀ͡ɴ] nasal uvular dental click
• [ǀ͡ʔ] glottalized dental 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.

Prior to 1989, [ʇ] was the IPA representation of the voiceless velar dental click. It is still occasionally used where the symbol [ǀ] would be confounded with other symbols, such as prosody marks.

Features

Features of dental clicks:

• The manner of articulation is a noisy, affricate-like release.

• The forward place of articulation is dental or alveolar and laminal, which means it is articulated with the blade of the tongue on the alveolar ridge or the upper teeth. (See denti-alveolar.) The rear place of articulation may be either velar or uvular.
• Dental clicks may be either oral or nasal, which means air is allowed to escape either through the mouth or the nose.
• They are central consonants, which means they are produced by allowing the airstream to flow over the middle of the tongue, rather than the sides.
• The airstream mechanism is velaric ingressive (AKA lingual ingressive), which means the pocket of air trapped between the two closures is rarefied by a "sucking" action of the tongue, rather than by the glottis or the lungs. The release of the forward closure produces the 'click' sound.

In English

English does not have a dental click (or any click consonant, for that matter) as a phoneme, but a plain dental click does occur as an interjection, usually written tsk or tut (and often reduplicated tsk-tsk or tut-tut), used to express commiseration, disapproval, irritation, or to call a small animal. Note, however, that while these words often represent a dental click and may be pronounced as such, they are also frequently pronounced /tɪsk/ or /tʌt/ (spelling pronunciations), and in such cases are not dental clicks.

In other languages

Dental clicks are common in Khoisan languages and the neighboring Nguni languages, such as Zulu and Xhosa. In the Nguni languages, the tenuis click is denoted by the letter c, the murmured click by gc, the aspirated click by ch, and the nasal click by nc. The prenasalized clicks are written ngc and nkc.

The Cushitic language Dahalo has four clicks, all of them nasalized: [ŋ̊ǀ, ŋǀ, ŋ̊ǀʷ, ŋǀʷ].

Hungarian does not have any click consonant as a phoneme, but the dental click does occur as an interjection, usually written cöccögés, used to express commiseration, disapproval, or irritation. German and French use the dental click in the exact same way as English, though it is usually rendered ts or tss (German), or "tut-tut" (French) in writing.

The dental click is used para-linguistically in several languages, mostly Middle-Eastern ones such as Arabic, Hebrew and Turkish, also Persian where it is transcribed as 'نچ'/'noch' (including Dari and Tajiki), and also some languages spoken in regions closer to, or in, Europe, such as Greek, Bulgarian, Portuguese, Romanian or Serbian to denote a negative response to a "yes or no" question. The dental click is sometimes accompanied by an upward motion of the head.[1][2]

See also

• List of phonetics topics

References

Bibliography

• Pullum, Geoffrey K.; Ladusaw, William A. (1996). Phonetic Symbol Guide. University of Chicago Press. pp. 178. 

Notes