Crossword Genius

Underground opposition? (10)

Ross

I believe the answer is:

resistance

This clue is a double definition.

'underground' is the first definition.
(synonyms)

'opposition?' is the second definition.
(opposition is a kind of resistance)

(Other definitions for resistance that I've seen before include "Organised covert opposition to an occupying power" , "defiance" , "Withstanding" , "French fighting group" , "immunity" .)

I've seen this clue in The Hindu.
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