Surge — it may be more blustery (7)

I believe the answer is:

gustier

'more blustery' is the definition.
('gusty' can be a synonym of 'blustery')

'surge it may be' is the wordplay.
'may be' is an anagram indicator.
'surge'+'it'='surgeit'
'surgeit' with letters rearranged gives 'GUSTIER'.

(Another definition for gustier that I've seen is " More squally".)

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