Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb siss

2 senses of siss

Sense 1
hiss, sizz, siss, sibilate -- (express or utter with a hiss)
       => talk, speak, utter, mouth, verbalize, verbalise -- (express in speech; "She talks a lot of nonsense"; "This depressed patient does not verbalize")

Sense 2
hiss, siss, sizz, sibilate -- (make a sharp hissing sound, as if to show disapproval)
       => utter, emit, let out, let loose -- (express audibly; utter sounds (not necessarily words); "She let out a big heavy sigh"; "He uttered strange sounds that nobody could understand")