American Dictionary

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Definition shape up in American English

shape up phrasal verb

[intransitive] phrasal verb
1

to develop

Example

Education is shaping up as the hottest issue on the agenda.

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2

to improve your behavior or your work

Example

The new boss has warned Roger to shape up.

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2.1

used for telling someone that if they do not improve their behavior or their work they must leave

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Definition shape up in American English