From Middle English dudde (“cloak, mantle, kind of cloth; ragged clothing or cloth”), from Old English *dudda (attested only as personal name Dudda, part of modern English Dudley), akin to Old Norse dúði (“swaddling clothes”), Low German dudel. Possibly borrowed from the Old Norse word and related to dyja (“to shake, tremble”). 
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.
- 2021 December 29, Drachinifel, 21:03 from the start, in The USN Pacific Submarine Campaign - The Dark Year (Dec'41 - Dec'42), archived from the original on 19 July 2022:
- The only amusing highlight was Gudgeon having managed to exploit U.S. codebreaking efforts to ambush and destroy the submarine I-173, albeit not for the lack of the Mark 14's trying to sabotage the effort, as the torpedo that had hit the sub had refused to detonate; it seemed, however, that the car-crash levels of kinetic energy involved in the dud simply ramming the sub had nonetheless done enough to fatally damage it.
- (informal) A failure of any kind.
- 2014 September 23, A teacher, “Choosing a primary school: a teacher's guide for parents”, in The Guardian:
- At the end of the day, the vast majority of primary schools are vibrant, friendly places and you may struggle to choose one because they all seem so great. Primary schools tend to have the feelgood factor. If you just aren't feeling it, this one's probably a dud.
- (obsolete, informal) Clothes, now always used in plural form duds.
- (losing lottery ticket): blank
See also Edit
- worms; worms as a species
dud m (plural duzi)
- mulberry (tree)
Derived terms Edit
dȕd m (Cyrillic spelling ду̏д)
- Soft mutation of .
|Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.|