slam dunk

 

noun

Basketball
  • a shot in which a player thrusts the ball down through the basket: they won on a slam dunk with two seconds remaining [as modifier]: a slam-dunk competition
  • [usually as modifier] North American informal something reliable or unfailing; a foregone conclusion or certainty: the film season’s one slam-dunk hit

verb

  • (slam-dunk) [with object] Basketball thrust (the ball) down through the basket: I do know that when they slam-dunk the ball we celebrate [no object]: he could slam-dunk like a bandit!
  • North American informal defeat or dismiss decisively: they continue to slam-dunk every proposal we make