o·ver·play / ˌōvərˈplā/ • v. [tr.] give undue importance to; overemphasize: he thinks the idea of a special relationship between sitter and artist is much overplayed. ∎ exaggerate the performance of (a dramatic role): the uncontrollable urge of ham actors to overplay their parts. ∎ Sports play very aggressively.PHRASES: overplay one's hand1. (in a card game) play or bet on one's hand with a mistaken optimism.2. spoil one's chance of success through excessive confidence in one's position.