More powerful (8)

I believe the answer is:

stronger

'more powerful' is the definition.
('strong' can be similar in meaning to 'powerful')

This is the entire clue.

(Other definitions for stronger that I've seen before include "Less weak" , "Mightier, stouter" , "More robust" , "More resolute" , "More powerful" .)

I've seen this clue in The Telegraph and the Sydney Morning Herald.

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