to act or behave in an exaggerated manner, as in a theatrical production
Also: overplay
WordReference Random House Learner's Dictionary of American English © 2025
o•ver•act /ˌoʊvɚˈækt/USA pronunciation
v.
WordReference Random House Unabridged Dictionary of American English © 2025- Show Businessto perform (a role) in an exaggerated manner: [~ + object]The hero in the play overacted the role.[no object]guilty of overacting.
o•ver•act
(ō′vər akt′),USA pronunciation v.t., v.i.
o′ver•ac′tion, n.
- to act in an exaggerated manner.
- over- + act 1605–15
Collins Concise English Dictionary © HarperCollins Publishers::
'overact' also found in these entries (note: many are not synonyms or translations):