act up

This page is about the phrasal verb act up.

Meaning: If a part of your body or a piece of equipment acts up, it doesn't work properly.

Synonym: play up, malfunction

For example:

  • act up My printer is acting up, so I'll have to get it fixed.

  • act up I'll have to give the tennis a miss this week. My knee is acting up again.

Nouns often used as subjects with act up: computer, printer, phone, air conditioner, knee, wrist, ankle, stomach

Quick Quiz:

If your computer's acting up, it's

a. performing very well

b. getting an upgrade

c. not working well

Phrasal verbs grammar

1000 Phrasal Verbs in Context ebook

Phrasal Verb of the Day

This entry is in the following categories:

Contributor: Matt Errey