Definition: an event that fails badly or is totally ineffectual
Usage: the first experiment was a real turkey; the meeting was a dud as far as new business was concerned
Definition: an explosion that fails to occur
Similar words: equipment failure, breakdown
Definition: a cessation of normal operation
Usage: there was a power breakdown
Definition: someone who is unsuccessful
Similar words: unsuccessful person, failure, loser, nonstarter
Definition: a person with a record of failing; someone who loses consistently
Synonyms: dud
Definition: failing to detonate; especially not charged with an active explosive
Usage: he stepped on a dud mine
Similar words: unloaded
Definition: (of weapons) not charged with ammunition
Usage: many people are killed by guns thought to be unloaded