class clown

Definition:

n. a student who frequently makes jokes or pokes fun; a wiseacre

Sentence:

The teacher did not find the class clown funny. Spelled as two words.

More example sentences:

The teacher did not find the class clown funny. Spelled as two words.

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Why was George known as the class clown at his old school?

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Alice was acting as a class clown in her class. What was her punishment?

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I am now officially the class clown.

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Synonyms:

prankster; joker; wisecracker

Antonyms:

serious kid