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English
act up
ækt ʌp
Meaning: to behave badly; to malfunction
Listen to pronunciation
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Verb inflections
| Form | Inflected form |
|---|---|
| Base | act up |
| 3rd person singular present | acts up |
| Present participle | acting up |
| Past | acted up |
| Will future | will act up |
| Going-to future | going to act up |
| Imperative negative | don't act up / do not act up |
Example
The kids started acting up because they were bored.
The kids started acting up because they were bored.
Usage Notes
Used when children are being difficult or when a machine or body part isn't working right.
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