1) Before boom, bah 2) Deflation sound 3) Hiss 4) Leaky noise 5) Make a hissing sound 6) Make a sibilant sound 7) Mouth 8) Puncture sound 9) Sibilant sound of derision 10) Sibilate 11) Sizz 12) Snake sound 13) Snaky sound 14) Sound of a reptile or steam 15) Speak 16) Talk 17) Utter 18) Verbalise 19) Verbalize 1) Sizz 
• (n.) A hissing noise. • (v. i.) To make a hissing sound; as, a flatiron hot enough to siss when touched with a wet finger.
Siss intransitive verb [ Of imitative origin; confer Dutch sissen , German zischen .] To make a hissing sound; as, a flatiron hot enough to siss when touched with a wet finger. [ Colloq. U. S.; Local, Eng.] Siss noun A hissing noise. [ Colloq. U. S.]