BOO


Meaning of BOO in English

■ exclamation

1》 said suddenly to surprise someone.

2》 said to show disapproval or contempt.

■ verb ( ~s , ~ing , ~ed ) say ‘~’ to show disapproval or contempt.

Phrases

wouldn't say ~ to a goose used to emphasize that someone is very shy or reticent.

Origin

C19: imitative of the lowing of oxen.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.