sibilate

Verbs

(v) pronounce with an initial sibilant
(v) utter a sibilant
(v) express or utter with a hiss siss, sizz, hiss,
(v) make a sharp hissing sound, as if to show disapproval hiss, siss, sizz,

Synonyms

siss sizz hiss

Words of close approximity

sibilant