1. someone who is unsuccessful; [syn: flop, dud, washout]
2. an explosion that fails to occur; [syn: misfire, dud]
3. an event that fails badly or is totally ineffectual; - Example: "the first experiment was a real turkey" - Example: "the meeting was a dud as far as new business was concerned" [syn: turkey, bomb, dud]
ADJECTIVE (1)
1. failing to detonate; especially not charged with an active explosive; - Example: "he stepped on a dud mine"