Adjective dud has 1 sense
- dud - failing to detonate; especially not charged with an active explosive; "he stepped on a dud mine"
Antonym: loaded (indirect, via unloaded)
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Noun dud has 3 senses
- flop, dud, washout - someone who is unsuccessful
--1 is a kind of failure, loser, nonstarter, unsuccessful person
- misfire, dud - an explosion that fails to occur
--2 is a kind of breakdown, equipment failure
- turkey, bomb, dud - an event that fails badly or is totally ineffectual; "the first experiment was a real turkey"; "the meeting was a dud as far as new business was concerned"
--3 is a kind of flop, bust
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