Crossword Genius

Surreptitiously (2,3,3)

Ross

I believe the answer is:

on the sly

'surreptitiously' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for on the sly that I've seen before include "With craft" , "Behind someone's back" , "Secretly or furtively" , "Under the table" , "in private" .)

I've seen this clue in The Guardian, The Times and the Sydney Morning Herald.
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