Act up
Act up verb - To behave badly.
Malfunction is a synonym for act up. In some cases you can use "Malfunction" instead a verb "Act up". popular alternative
Malfunction
Malfunction verb - Fail to function or function improperly.
Act up is a synonym for malfunction in crash topic. You can use "Act up" instead a verb "Malfunction", if it concerns topics such as thrive. popular alternative
Nearby Words: malfunctioning, malfunctioned
Mutual synonyms
Cite this Source
Malfunction and Act up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/act_up/malfunction
Act up & Malfunction. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/act_up/malfunction>.
Malfunction or Act up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/act_up/malfunction.
Google Ngram Viewer shows how "act up" and "malfunction" have occurred on timeline