boo

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Interjection[change]

Interjection
boo

  1. Boo is a word that is sometimes shouted to scare a person.
    He jumped up from behind the box and yelled "boo!" I was frightened.
    Ghosts say "boo".
  2. If someone in an audience says "boo", that means that they do not like the show.
    Boo, get off the stage.

Noun[change]

Singular
boo

Plural
boos

  1. A loud and sometimes frightening yell or shout.

Verb[change]

Plain form
boo

Third-person singular
boos

Past tense
booed

Past participle
booed

Present participle
booing

  1. To boo someone is to shout or yell at them.
    When it was my turn to sing a song, the crowd booed at me.