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  1. Dictionary
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    boo
    [bo͞o]
    exclamation
    1. said suddenly to surprise someone:
      "“Boo!” she cried, jumping up to frighten him"
    2. said to show disapproval or contempt, especially at a performance or athletic contest:
      "“There's only one bar.” “Boo!”"
    noun
    boo (noun) · boos (plural noun)
    1. an utterance of “boo” to show disapproval or contempt:
      "the audience greeted this comment with boos and hisses"
      Opposite:
      cheer
    verb
    boo (verb) · boos (third person present) · booed (past tense) · booed (past participle) · booing (present participle)
    1. say “boo” to show disapproval or contempt:
      "they booed and hissed when he stepped on stage" · "I was practically booed off the stage for talking about cyberpunk"
    Origin
    mid 17th century (in the phrase say boo to a goose): imitative; probably an alteration of earlier bo, used in the same way since the 16th century.
    boo
    [bo͞o]
    noun
    US ENGLISH
    informal
    boo (noun) · boos (plural noun)
    1. a person's boyfriend or girlfriend:
      "got a call this morning from my boo" · "he swings by to surprise his boo with some flowers"
    Origin
    1980s: origin uncertain; perhaps from boo, a term of endearment, or perhaps originally a nursery word meaning ‘child’, or perhaps an alteration of French beau ‘boyfriend, male admirer’.
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  2. People also ask
    What does Boo mean in slang?
    1. (used to express contempt or disapproval or to startle or frighten.) n. 2. an exclamation of contempt or disapproval: a loud boo from the bleachers. 3. to cry “boo” in derision. 4. to show disapproval of by booing. n. Slang. marijuana.

    Boo - definition of boo by The Free Dictionary

    thefreedictionary.com
    Is Boo a noun or noun?
    [VERB noun] Boo is also a noun. She was greeted with boos and hisses. The fans are entitled to their opinion but booing doesn't help anyone. You say ' Boo! ' loudly and suddenly when you want to surprise someone who does not know that you are there.

    BOO definition and meaning | Collins English Dictionary

    collinsdictionary.com
    Is 'Boo' a derogatory term?
    The term 'Boo' is not derogatory at all. It is derived from the French word 'beau', meaning 'beautiful'. In 18th century England, it meant an admirer, usually male. It may have made its way into Afro-Caribbean language through French colonization of some Caribbean islands.

    Is 'boo' a derogatory term in any way? - Quora

    quora.com
    Why do people say Boo?
    The 1808 Etymological Dictionary of the Scottish Language suggests boo is connected to the mythical Bu-Man, a word apparently related to bogeyman. What about when people or an audience say boo to condemn a performance, person, or action?

    BOO Definition & Meaning | Dictionary.com

    dictionary.com
    What does Boohoo mean?
    1. A slight physical injury, such as a scratch. 2. A stupid mistake; a blunder. [Perhaps alteration of boohoo, to weep noisily.] American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

    Booboos - definition of booboos by The Free Dictionary

    thefreedictionary.com
    What does it mean if a person doesn't say Boo?
    A person who (US) wouldn't say boo or (Brit) wouldn't say boo to a goose is very quiet and shy. The crowd shouted “ Boo!” when the announcement was made. Boo! Get off the stage. ◊ When people say “Boo!” with this meaning, they say it very slowly. My brother scared me when he jumped out from behind the door and shouted “ Boo!”

    Boo Definition & Meaning | Britannica Dictionary

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  3. Britannica Dictionary definition of BOO : to show dislike or disapproval of someone or something by shouting “Boo” slowly

    Boo Definition & Meaning | Britannica Di…

    www.britannica.com/dictionary/boo
    n. pl. boos 1. A sound uttered to show contempt, scorn, or disapproval. 2. Informal Any sound or word: You never said boo to me about overtime. interj. Used to express contempt, scorn, or disapproval or to frighten or surprise another.

    Boo - definition of boo by The Free Dicti…

    www.thefreedictionary.com/boo
    boo1 (bo̅o̅), interj., n., pl. boos, v., booed, boo•ing. interj. (used to express contempt or disapprobation or to startle or frighten). n. an exclamation of contempt or disapproval: a loud boo from the bleachers.

    boo - WordReference.com Dictionary of …

    www.wordreference.com/definition/boo
  4. Merriam Webster
    https://www.merriam-webster.com/dictionary/boo

    Boo Definition & Meaning - Merriam-Webster

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  5. Cambridge Dictionary
    https://dictionary.cambridge.org/dictionary/english/boo

    BOO | English meaning - Cambridge Dictionary

  6. The Free Dictionary
    https://www.thefreedictionary.com/boo

    Boo - definition of boo by The Free Dictionary

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  7. Collins Dictionary
    https://www.collinsdictionary.com/dictionary/english/boo

    BOO definition and meaning | Collins English Dictionary

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  8. Dictionary
    https://www.dictionary.com/browse/boo

    BOO Definition & Meaning | Dictionary.com

  9. Collins Dictionary
    https://www.collinsdictionary.com/us/dictionary/english-word/boo

    BOO - All you need to know about it | Collins English Dictionary

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  10. Your Dictionary
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    Boo Definition & Meaning - YourDictionary

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  11. Cambridge Dictionary
    https://dictionary.cambridge.org/us/dictionary/learner-english/boo

    BOO | definition in the Cambridge Learner’s Dictionary

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  12. WordReference
    https://www.wordreference.com/definition/boo

    boo - WordReference.com Dictionary of English

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  13. Britannica
    https://www.britannica.com/dictionary/boo

    Boo Definition & Meaning | Britannica Dictionary

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