What does act up mean?

act up meaning in Urban Dictionary

behaving perhaps not precisely, being unreliable

act up meaning in General Dictionary

misbehave poorly; work in a silly or incorrect means

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  • make itself believed as a recurring pain

Sentence Examples with the word act up

He had, however, the courage to act up to his own professions in collocating the rollers (Coracias) with the beeeaters (Merops), and had the sagacity to surmise that Menura was not a Gallinaceous bird.

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