Sibilant

'Sibilant' in Webster

Practice English, talk to an artificial intelligence robot -- hear its voice! (hilarious)
In depth article on sibilant found in wikipedia.


Sib"i*lant   (?), a. [L. sibilans, -antis, p.
pr. of sibilare to hiss: cf. F. sibilant.]
 Making a hissing sound; uttered with a hissing sound; hissing; as, s, z, sh, and zh, are sibilant elementary
sounds. -- n. A sibiliant letter.

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