Act up
Act up verb - To engage in attention-getting playful or boisterous behavior.
Usage example: you should have seen the boys acting up when they put on their aprons
Roar
Roar verb - To make a long loud deep noise or cry.
Cite this Source
Roar and Act up. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/act_up/roar
Act up & Roar. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/act_up/roar>.
Roar or Act up. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/act_up/roar.
Google Ngram Viewer shows how "act up" and "roar" have occurred on timeline