Crossword Genius

Not military, but well-mannered (5)

Ross

I believe the answer is:

civil

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'well-mannered' is the definition.
(I've seen this in another clue)

I don't understand the rest of the clue.

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(Other definitions for civil that I've seen before include "Mannerly" , "Not rude" , "Nonviolent refusal to obey laws" , "(Of law) non-criminal" , "Courteously polite" .)

I've seen this clue in The Mirror.
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