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Use "overactor" in a sentence
"Ricardo Montalbán, 88, Mexican-born American overactor, best rememebred as Khan in Star Trek II: The Wrath of Khan, where he and William Shatner fought the most intense overacting battle of all-time."
"Maybe it's just me, but every time I see Vince Vaughn I think, "Man, this guy is such an overactor.""
"A radio message from the old man brings them to a South Seas isle populated by kitten-sized elephants and giant butterflies, with a goofball tour guide (overactor supreme Luis Guzman) and his nubile daughter (lightly clothed Vanessa Hudgens) tagging along."