act up

== English == === Pronunciation === (UK) enPR: ŭp, IPA(key): /ækt ˈʌp/, [ækˈtɐʔp] (US) enPR: ŭp, IPA(key): /ækt ˈʌp/, [ækˈtʌp̚] (General Australian) IPA(key): /ækt ˈap/, [ækˈtäp] Rhymes: -ʌp === Verb === act up (third-person singular simple present acts up, present participle acting up, simple past and past participle acted up) (intransitive, idiomatic) To misbehave; to cause trouble. Synonyms: carry on, act out, play up Coordinate term: kick up (intransitive, idiomatic) To perform the duties of an appointment senior to that actually held; to deputise for a superior. ==== Translations ==== === See also === throw a tantrum === Anagrams === caput