DUD
dud
(adjective) failing to detonate; especially not charged with an active explosive; “he stepped on a dud mine”
turkey, bomb, dud
(noun) 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”
misfire, dud
(noun) an explosion that fails to occur
flop, dud, washout
(noun) someone who is unsuccessful
Source: WordNet® 3.1
Etymology
Noun
dud (plural duds)
(informal) A device or machine that is useless because it does not work properly or has failed to work, such as a bomb, or explosive projectile.
(informal) A failure of any kind.
(informal) A loser; an unlucky person.
A lottery ticket that does not give a payout.
(obsolete, informal) Clothes, now always used in plural form duds.
Synonyms
• (losing lottery ticket): blank
Anagrams
• DDU, UDD
Source: Wiktionary