Someone finding no attire good enough (6)

I believe the answer is:

nudist

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'someone' is the definition.
(nudist is a kind of someone)

I don't understand the rest of the clue.

(Other definitions for nudist that I've seen before include "One naked by conviction" , "One who sheds clothes in camp or on beach" , "Sun worshipper" , "Person committed to going unclothed" , "S/he prefers to be naked" .)

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

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