definition of
sibilate

[1] #1 sibilate v. pronounce with an initial sibilant. wn

[2] #2 sibilate v. utter a sibilant. wn

[3] #3 sibilate v. [hiss, sizz, siss] express or utter with a hiss. wn

[4] #4 sibilate v. [hiss, siss, sizz] make a sharp hissing sound, as if to show disapproval. wn