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An actual velar click, in the sense that term is used with the languages of southern Africa, is not possible. A click is articulated with two closures of the tongue or lips. The rear articulation of all clicks is velar or uvular, and the families of dental, alveolar, palatal, and bilabial clicks are defined by the front closure, which is released to cause the influx of air from the front of the mouth that identifies a click. A forward closure in the velar region would leave no room for the air pocket that generates that influx of air.<ref>Pullum & Ladusaw (2013) ''[[Phonetic Symbol Guide]]'', University of Chicago Press, p. 101.</ref>
From 2008 to 2015 the unused letter was picked up by the [[extensions to the IPA]] to mark a [[velodorsal]] articulation in [[speech pathology]].<ref>{{cite web |url=http://www.langsci.ucl.ac.uk/ipa/extIPAChart2008.pdf |title=
However, velar clicks are possible in the sense that the release sequence of the tongue closures can be reversed: in [[paralinguistic]] use in languages such as Wolof, it is the rear (velar) closure rather than front one that is released to produce the sound, and such clicks are termed 'velar'.<ref name=Lionnet>Florian Lionnet (f.c.) "Paralinguistic use of clicks in Chad"</ref>
The IPA letter was resurrected for such sounds, and dropped from the extIPA to avoid confusion with such usage.
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