Siss

WORDNET DICTIONARY

siss(v = verb.communication) hiss, sibilate, sizz - express or utter with a hiss; Array

is one way to mouth, speak, talk, utter, verbalise, verbalize

Sample sentences:
Somebody ----s something
Somebody ----s that CLAUSE

siss(v = verb.communication) hiss, sibilate, sizz - make a sharp hissing sound, as if to show disapproval; Array

is one way to emit, let loose, let out, utter

Sample sentences:
Something ----s
Somebody ----s

Siss, v. i. [Of imitative origin; cf. D. sissen, G. zischen.].

To make a hissing sound; as, a flatiron hot enough to siss when touched with a wet finger. [1913 Webster]

Siss, n.

A hissing noise. [1913 Webster]

For further exploring for "Siss" in Webster Dictionary Online