loosen up

phrasal verb·1 sense·particle up

Meanings

1

Become less tense or formal, especially before an activity

Why “up”? The action stops. With give up, up can show that someone stops trying.

He loosened up after a few jokes.
He became less tense after a few jokes.
The team loosened up after the warm-up game.
The team became less tense after the warm-up game.

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He loosened up after a few jokes. What does it mean?

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