WordWeb Online

1. Failing to detonate; especially not charged with an active explosive
   "he stepped on a dud mine"

1. Someone who is unsuccessful
   - flop [informal], washout, clunker [N. Amer, informal]
    
2. An explosion that fails to occur
   - misfire
    
3. An event that fails badly or is totally ineffectual
   "the meeting was a dud as far as new business was concerned";
   - turkey [informal], bomb, flop [informal], clunker [N. Amer, informal]

Derived forms: duds

See also: unloaded

Type of: breakdown, bust [informal], clinker [N. Amer, informal], epic fail [informal], equipment failure, failure, fizzle, flop [informal], loser, no-hoper [informal], nonstarter, unsuccessful person

Encyclopedia: Dud