Crossword Genius

Fairly fair (6)

Ross

I believe the answer is:

pretty

I'm a little stuck... Click here to teach me more about this clue!

'fairly' is the definition.
(I know that fairly can be written as pretty)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for pretty that I've seen before include "Moderately" , "chocolate-box" , "sweet" , "Fairly; appealing" , "Rather attractive" .)

I've seen this clue in The Guardian, The Times and The Telegraph.
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