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duff

duff

1 8.2
Does not work properly and is useless
  • adjective
  • /dʌf/
  • Slang
: averiado
  • The old radio was completely duff and wouldn't turn on.

Examples

  • If the batteries are duff, the remote control won't work at all.

  • The car won't start; it must be duff.

  • He bought a duff phone that stopped working after a week.

  • This old computer is completely duff.

  • The bicycle is duff and can't be ridden since the brakes don't work.

  • He kept complaining about his duff laptop that crashes every time he tries to use it.

  • I had to throw away the duff television because it wouldn't turn on no matter what I tried.

Synonyms

dysfunctional
vsduff
101 6.1

Not working properly or doing its job

is used for things broken or useless rather than only abnormal function
on the fritz
vsduff
  • Informal
18 8.9

Not working properly, like a machine or phone

is a general word for anything broken, useless, or not working properly
janky
vsduff
  • Slang
4 8.8

Poor quality and not reliable

is about being broken or useless rather than low quality
dicky
vsduff
  • UK
1 9.3

A part that does not work properly or is weak, often for body parts and machines

is the neutral general term used beyond British informal contexts

Antonyms

∞ 3.1

Produces the intended result, for example a speech or medicine

90 4.1

Working and ready to use, for example machines or systems

65 3.2

Working correctly so it can be used

Idioms

up the duff
  • Slang
1 9.9

A woman who is expecting a baby

Compounds

plum duff
  • Archaic
1 9.9

A steamed or boiled sweet pudding made with dried fruit like raisins and currants

How Functional

working
322 1.0
faulty
71 3.5
duff
  • Slang
1 8.2
inoperable
8 7.1

Surface Forms

duff positive

Etymology

Duff (not working) grew from the same slang sense of being useless or broken, and a helpful way to remember it is to think of 'duff' as like 'done for' — not working or useless. So when something is duff it does not work properly.