Answer: hammy

AnswerCrossword Clue
HAMMYOverdramatic
HAMMYMelodramatic, and then some
HAMMYScenery-chewing
HAMMYOverly dramatic
HAMMYMelodramatic to the max
HAMMYApt to chew the scenery
HAMMYLike an emoter
HAMMYLike certain actors: Slang.
HAMMYOveracted
HAMMYOverdone
HAMMYOh-so-dramatic
HAMMYLike over-the-top acting
HAMMYProne to mugging, say
hammy(of acting or an actor) overacted; exaggerated
hammyresembling ham in taste, flavor, appearance, etc.
hammyoverly theatrical