Honestly (4,3,6)

There are a few possibilities for this:

Which length description are you looking for?:

10 2,5

4,3,6

fair and square

'honestly' is the definition.
(as in winning fair and square)

This is all the clue.

(Other definitions for fair and square that I've seen before include "Justly and honestly" , "Above board" , "On the level" , "Rightfully" , "In a proper way" .)

I've seen this clue in The Guardian.

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