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Definition screw up in British English

screw up phrasal verb

phrasal verb
1

to make something into a smaller shape by squeezing or twisting it

Example

Several pages had been screwed up and tossed in the basket.

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2

if you screw up your eyes, you close them tightly

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2.1

if you screw up your face, you pull your forehead down and push your mouth and nose up, usually to show that you dislike something

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3

to make a serious mistake, or to spoil something, especially a situation

Example

I really screwed up this time, didn't I?

Example

He made a bad decision that screwed up his entire life.

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4

to make someone feel so upset or confused that their whole personality is affected, often permanently

Example

Divorce doesn't have to screw your children up.

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5

to prepare mentally for doing something difficult

Example

I'm trying to screw up enough nerve to ask her a favour.

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Definition screw up in British English