Crossword Genius

One also raised not to work? (3)

Ross

I believe the answer is:

dud

I'm a little stuck... Click here to teach me more about this clue!

'one' is the definition.
Both the definition and answer are adjectives. Perhaps there's a link between them I don't understand?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for dud that I've seen before include "Palindrome for a flop" , "Not functioning" , "Defective" , "Explosive not detonating" , "Bullet that fails to fire" .)

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