Act up
Act up verb - To behave badly.
Conk out and act up are semantically related. in malfunction topic. In some cases you can use "Conk out" instead a verb "Act up". informal substitute
Conk out
Conk out verb - To stop functioning.
Usage example: the engine conked out just as we were approaching the exact middle of nowhere
Mutual synonyms
Cite this Source
Conk out and Act up. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/act_up/conk_out
Act up & Conk out. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/act_up/conk_out>.
Conk out or Act up. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/act_up/conk_out.
Google Ngram Viewer shows how "act up" and "conk out" have occurred on timeline