Definition, Meaning & Synonyms

boo

interjection
/buː/
Definition
An expression used to show surprise or to frighten someone.
Examples
  • When she jumped out from behind the door and shouted ‘Boo!’, it made me scream.
  • The audience began to boo when the band played off-key.
Meaning
The term ‘boo’ can be used to startle someone or to express discontent, as in a crowd booing a performance that they find unsatisfactory.
Synonyms
  • shout
  • hiss
  • jeer