Screw up
verb
To make a big mistake or do something really badly.
I really screwed up this time – I forgot our anniversary.

Often appears as...
- screw up one's courage
- screw up one's face
Usage tips
Informal
Idiomatic
verb
To become nervous or anxious, often to the point of not being able to perform a task.
He screws up whenever he has to speak in front of an audience.

Often appears as...
- screw up in performance
- screw up in interview
Usage tips
Informal
Idiomatic
verb
To gather or contract into wrinkles or small folds.
She screwed up her nose in distaste.

Often appears as...
- screw up one's face
- screw up one's eyes
verb
To make a big mistake or do something really badly.
I really screwed up this time – I forgot our anniversary.

Often appears as...
- screw up one's courage
- screw up one's face
Usage tips
Informal
Idiomatic
verb
To become nervous or anxious, often to the point of not being able to perform a task.
He screws up whenever he has to speak in front of an audience.

Often appears as...
- screw up in performance
- screw up in interview
Usage tips
Informal
Idiomatic
verb
To gather or contract into wrinkles or small folds.
She screwed up her nose in distaste.

Often appears as...
- screw up one's face
- screw up one's eyes
Definition 1 of 3

Informal Usage
Used more in casual conversation than in formal writing or speech.

I screwed up by telling the joke at the meeting.
Responsibility
Expresses personal responsibility for a mistake.

I need to apologize; I really screwed up.
Regret Potential
Often used when there's regret or remorse over the action.

He screwed up and felt terrible about it for days.
Informal Usage
Used more in casual conversation than in formal writing or speech.

I screwed up by telling the joke at the meeting.
Responsibility
Expresses personal responsibility for a mistake.

I need to apologize; I really screwed up.
Regret Potential
Often used when there's regret or remorse over the action.

He screwed up and felt terrible about it for days.
Informal Usage
Used more in casual conversation than in formal writing or speech.

I screwed up by telling the joke at the meeting.
Responsibility
Expresses personal responsibility for a mistake.

I need to apologize; I really screwed up.
Regret Potential
Often used when there's regret or remorse over the action.

He screwed up and felt terrible about it for days.
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