Crafty behaviour (5)

I believe the answer is:

guile

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

This is the entire clue.

(Other definitions for guile that I've seen before include "Crafty behaviour" , "Sly intelligence" , "Cunning intelligence" , "Slyness" , "Cunning, deceit" .)

I've seen this clue in The Independent and The Guardian.

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