boo
[noun]
Synonyms: raspberry, bazoo, bird, Bronx cheer, catcall, hiss, hoot, pooh, pooh-pooh, razz
[noun]
Synonyms: marijuana, cannabis, grass, Mary Jane, moocah, pot, tea, weed

[TahlilGaran] English Synonym Dictionary ▲

I. boo¹ /buː/ verb [intransitive and transitive]
to shout ‘boo’ to show that you do not like a person, performance, idea etc:
Some of the audience started booing.
She was booed off stage (=they shouted ‘boo’ until she left the stage).

[TahlilGaran] Dictionary of Contemporary English ▲

II. boo² interjection
[Date: 1800-1900; Origin: Natural sound]

1. a noise made by people who do not like a person, performance, idea etc

2. a word you shout suddenly to someone as a joke in order to frighten them

3. wouldn’t say boo to a goose an expression used to describe a shy quiet person

[TahlilGaran] Dictionary of Contemporary English ▲

boo
noun
ADJ. loud
VERB + BOO be greeted/met with His speech was met with boos.
PREP. ~ from There were loud boos from the audience.

[TahlilGaran] Collocations Dictionary ▲