overact
verb
[ əʊvərˈakt ]
• (of an actor or actress) act a role in an exaggerated manner.
• "a weepy actress with a strong tendency to overact"
Similar:
exaggerate,
overdo it,
overplay it,
ham it up,
pile it on,
lay it on thick,
lay it on with a trowel,
camp it up,
