For the first time in 12 years, the International Phonetic Association is
amending its official alphabet. A sound called the labiodental flap will be
granted its own letter, one that looks something like a v with a hook.

The sound, a buzz sometimes capped by a faint pop, is present in more than 70 African languages. It is produced by the lower lip moving back and forward, flapping on the inside of the upper teeth.

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