WordWeb Online

1. A fricative sound (especially as an expression of disapproval)
   "the performers could not be heard over the hiss of the audience";
   - hissing, hushing, fizzle, sibilation
    
2. A cry or noise made to express displeasure or contempt
   - boo, hoot, Bronx cheer [N. Amer], raspberry [informal], razzing [N. Amer, informal], razz [N. Amer, informal], snort

1. Make a sharp hissing sound, as if to show disapproval
   - siss [US, informal], sizz [US, informal], sibilate
    
2. Move with a whooshing sound
   - whoosh
    
3. Express or utter with a hiss
   - sizz [US, informal], siss [US, informal], sibilate
    
4. Show displeasure, as after a performance or speech
   - boo

Derived forms: hissed, hisses, hissing

Type of: call, condemn, cry, emit, go, let loose, let out, locomote, mouth, move, noise, outcry, shout, speak, talk, travel, utter, verbalise [Brit], verbalize, vociferation, yell

Antonym: acclaim

Encyclopedia: Hiss