In a clever way, is not part of Solidarity (8)

I believe the answer is:

adroitly

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'in' is the definition.
Both the definition and answer are adverbs. Maybe you can see a link between them that I can't see?

I don't understand the rest of the clue.

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(Other definitions for adroitly that I've seen before include "With dexterity" , "Idolatry (anag) -- with skill" , "Quickly and skilfully" , "Dexterously" , "in masterly fashion" .)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.

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