overact
/ˌəʊvərˈækt/verb
no obj.
- (of an actor or actress) act a role in an exaggerated manner（演员）演得过火; 演得过于夸张：
a weepy actress with a strong tendency to overact
表演极易过火、动不动就哭的女演员
as noun overacting there was a certain amount of overacting.表演得夸张了一点儿。