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Definition of "boo" []

  • A sound uttered to show contempt, scorn, or disapproval. (noun)
  • Informal Any sound or word: You never said boo to me about overtime. (noun)
  • Used to express contempt, scorn, or disapproval or to frighten or surprise another. (interjection)
  • To utter a boo. (verb-intransitive)
  • To express contempt, scorn, or disapproval of by booing: booed the singer off the stage. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "boo" in a sentence
  • "MsgBox oldboo = \% oldboo\% while boo is now \% boo\% boo = 1000"
  • ""boo hoo she was being mean so i punched her in the face and its her fault not mine she shouldnt have said mean things to me so in result i threw a fist instead of walking away like a person would normally do..boo hoo! its all her fault!""
  • "Do your thoughts talk you into eating too much candy quicker than you can say the word boo?"