Crossword Genius

Most reasonable if rates are adjusted (7)

Ross

I believe the answer is:

fairest

'most reasonable' is the definition.
('fair' is associated in meaning with 'reasonable')

'if rates are adjusted' is the wordplay.
'are adjusted' indicates anagramming the letters.
'if'+'rates'='ifrates'
'ifrates' with letters rearranged gives 'FAIREST'.

(Other definitions for fairest that I've seen before include "Most beautiful" , "Very lovely" , "'''Mirror, mirror on the wall, who is the ... of them all'' (Snow White's stepmother) (7)'" .)

I've seen this clue in The Mirror.
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