Crossword Genius

Fairly easily, more or less (6,4)

Ross

I believe the answer is:

pretty well

'more or less' is the definition.
(I've seen this before)

'fairly easily' is the wordplay.
'fairly' becomes 'pretty' (I've seen this before).
'easily' becomes 'well' (eg in a phrase like 'perfectly well').
'pretty'+'well'='PRETTY WELL'

(Other definitions for pretty well that I've seen before include "Close to" , "Sort of" , "More or less" , "Practically" , "Aim of dressing in Derbyshire" .)

I've seen this clue in The Telegraph.
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