Crossword Genius

Amenable protest, when vowels have been switched (9)

Ross

I believe the answer is:

compliant

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'amenable' is the definition.
(similar in meaning)

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(Other definitions for compliant that I've seen before include "Manageable" , "Yielding to pressure" , "Obliging" , "Subservient" , "Submissive, acquiescent" .)

I've seen this clue in The Daily Express.
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