dud

Noun
  1. Someone who is unsuccessful (synset 110117246)
    domain usage: colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech
    is a type of: failure, loser, nonstarter, unsuccessful person - a person with a record of failing; someone who loses consistently
    same as: flop, washout
  2. An explosion that fails to occur (synset 107436349)
    is a type of: breakdown, equipment failure - a cessation of normal operation
    same as: misfire
  3. An event that fails badly or is totally ineffectual (synset 107379793)
    "the first experiment was a real turkey"; "the meeting was a dud as far as new business was concerned"
    is a type of: bust, fizzle, flop - a complete failure
    same as: bomb, turkey
Adjective
  1. Failing to detonate;
    Especially not charged with an active explosive (synset 301428027)
    "he stepped on a dud mine"
    similar to: unloaded - (of weapons) not charged with ammunition

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