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Noun: boo  boo
  1. A cry or noise made to express displeasure or contempt
    - hoot, Bronx cheer [N. Amer], hiss, raspberry [informal], razzing [N. Amer, informal], razz [N. Amer, informal], snort
Verb: boo  boo
  1. Show displeasure, as after a performance or speech
    - hiss
Interjection: boo  boo
  1. Exclamation used to startle or frighten
  2. Expressing disapproval

Derived forms: boos, booing, booed

Type of: call, condemn, cry, outcry, shout, vociferation, yell

Antonym: applaud

Encyclopedia: Boo, Sweden