boo

Pronunciation

• IPA ^(key): /buː/

• Audio (AU)

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Interjection

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

Singular boo

Plural boos

1. A loud and sometimes frightening yell or shout.

Verb

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.