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act out

B1 neutral separable both
In simple words

To show or perform a story or feeling by doing it, not just saying it.

Literal meaning: To carry out an action completely — 'act' (perform) + 'out' (fully, to completion).

Meanings

1 B1 neutral

To perform or dramatise a story, scene, or situation, especially as a learning exercise.

"The students were asked to act out a scene from the play in front of the class."

Grammar: separable
2 B2 idiomatic neutral

To express difficult emotions or psychological conflicts through behaviour rather than words, often in a disruptive way.

"The child began acting out at school after his parents' divorce."

Grammar: inseparable
3 B2 idiomatic neutral

To put a fantasy, desire, or plan into action in real life.

"He finally got the chance to act out his dream of sailing around the world."

Grammar: separable
Usage notes

Used in both educational/theatrical contexts (dramatising a scene) and psychological contexts (externalising feelings through behaviour, often negative). In psychology, 'acting out' often refers to children or adults expressing distress through disruptive behaviour.

Commonly used with

scene fantasy emotions frustration trauma role

Forms

Base
act out
I/you/we/they
3rd person
acts out
he/she/it
Past simple
acted out
yesterday
Past participle
acted out
have + pp
-ing form
acting out
continuous

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Synonyms

perform enact dramatise role-play re-enact express

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