Synonymer till hissingsubstantiv(a fricative sound (especially as an expression of disapproval)) hiss; hushing; fizzle; sibilation; hissingverb(make a sharp hissing sound, as if to show disapproval) hiss; siss; sizz; sibilate; hissing(move with a whooshing sound) hiss; whoosh; hissing(express or utter with a hiss) hiss; sizz; siss; sibilate; hissing(show displeasure, as after a performance or speech) boo; hiss; hissing