definition of
sly

[1] #1 sly s. [crafty, cunning, dodgy, foxy, guileful, knavish, slick, tricksy, tricky, wily] marked by skill in deception; "cunning men often pass for wise"; "deep political machinations"; "a foxy scheme"; "a slick evasive answer"; "sly as a fox"; "tricky Dick"; "a wily old attorney". wn