Crossword Genius

An uncooperative habit? (4)

Ross

I believe the answer is:

wont

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'habit?' is the definition.
(I know that habit can be written as wont)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for wont that I've seen before include "normal practice" , "Is not going to" , "Accustomed" , "Succinct refusal" , "Habit" .)

I've seen this clue in The Globe and Mail.
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