Crossword Genius

Failure; counterfeit (3)

Ross

I believe the answer is:

dud

This clue is a double definition.

'failure' is the first definition.
(I know that dud is a type of failure)

'counterfeit' is the second definition.
(I've seen this before)

(Other definitions for dud that I've seen before include "Defective" , "'Flop, turkey (3)'" , "Useless, doesn't work - a palindrome" , "Fake -- failure" , "Useless, ineffective" .)

I've seen this clue in The Times.
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