English Reference

Phrasal verb

act out

Definition

phrasal verb. to show your feelings or frustrations through bad behavior instead of talking about them.

phrasal verb. to express repressed emotions or impulses through overt behavior, typically in a disruptive or socially unacceptable manner.

Examples

“The toddler often acts out when he is tired.”

“Students who struggle with learning disabilities may act out in class because they feel frustrated by the difficult material.”

“The therapist noted that the patient tended to act out during sessions whenever the conversation shifted toward his childhood experiences.”

Examples

simple

“The toddler often acts out when he is tired.”

contextual

“Students who struggle with learning disabilities may act out in class because they feel frustrated by the difficult material.”

complex

“The therapist noted that the patient tended to act out during sessions whenever the conversation shifted toward his childhood experiences.”

Usage

Usually used without an object when describing bad behavior.

Teaching tip

Help students distinguish between the literal 'performing' sense and the figurative 'misbehaving' sense by looking at the context of frustration or anger.

Pitfall

He was acting out a fool.

He was acting like a fool.

use 'act like' for comparisons; 'act out' refers to behavior caused by hidden emotions or performing a script.

Phrasal verb

Particles

out

Separability

optional

Pattern

act + out

Synonyms

misbehaveperformbehave badlyshow off

Antonyms

behavecontrol oneself

Grammar

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Level
B2 · Upper Intermediate
Updated

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English Reference