(p. pr. & vb. n.) of Shirk.

Machiavellian Machiavellic acute arch artful astute canny chary clever crafty cunning cute deceitful deep deep-laid designing diplomatic distrustful elusive elusory evasive feline foxy guileful ingenious insidious inventive knowing leery malingering mistrustful pawky politic ready resourceful scheming serpentine sharp shifty shirking shrewd shy slick slippery sly smooth snaky sneaky sophistical stealthy strategic subtile subtle supple suspecting suspicious tactical trickish tricksy tricky vulpine wary wily