American Dictionary

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Definition joker in American English

joker noun

[countable] noun
/ˈdʒoʊkər/
1

someone who likes to tell jokes or to do things to make people laugh

Example

He's a real joker.

Synonyms and related words
2

someone who does something that you think is stupid

Example

Some joker has left his car in my parking space again.

Synonyms and related words
3

a type of playing card with a picture of a jester on it that is used in some card games

Synonyms and related words
Definition joker in American English