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screw up

B1 informal separable transitive/intransitive

To make a serious mistake or ruin something; also to crumple paper or contort a face; informally, to cause someone psychological damage.

In plain English

To make a big mistake and ruin something, or to crumple something into a ball.

What does "screw up" mean?

4 meanings, ordered from most common to least. Color-coded by CEFR level.

1 B1 idiomatic informal

To make a serious mistake that ruins a plan, situation, or task.

"I totally screwed up the presentation by forgetting to save the updated slides."

"How could I have screwed that up so badly?"

— Breaking Bad, Season 3 (AMC, 2010)
separable
2 B1 neutral

To crumple paper or a similar material into a tight ball.

"He screwed up the rejection letter and threw it in the bin."

separable
3 B2 neutral

To distort or contort the face, especially due to pain, disgust, or intense concentration.

"She screwed up her face at the taste of the bitter medicine."

separable
4 B2 idiomatic informal

To cause lasting psychological or emotional damage to someone.

"Years of bullying had really screwed him up and he struggled with confidence as an adult."

separable

Literal vs figurative

Words literally mean

To screw (tighten by turning) something up — extended to mean twisting or distorting something beyond use.

Actually means

To make a big mistake and ruin something, or to crumple something into a ball.

Usage tip

One of the most commonly used informal phrasal verbs in English. The mistake sense is widely understood internationally. Also used as a noun: 'a screw-up'. Can be used to describe ruining a situation, making an error, or causing emotional damage to someone ('his childhood really screwed him up').

Words that pair with "screw up"

Natural word combinations native speakers use most often.

plan interview relationship face paper order

How to conjugate "screw up"

The five tense forms you'll use most often.

Base
screw up
I/you/we/they
3rd person
screws up
he/she/it
Past simple
screwed up
yesterday
Past participle
screwed up
have + pp
-ing form
screwing up
continuous

Hear "screw up" in the wild

Listen to native speakers using "screw up" in real YouTube videos — click a clip to watch it on Looplines.

Other ways to say "screw up"

Swap in when you want variety — tap a linked one to explore it.

botch bungle foul up make a hash of mess up ruin

Keep exploring

Jump to every phrasal verb built on the same verb, particle, or level.