1. In a knavish manner; dishonestly; fraudulently.
2. Mischievously; waggishly; roguishly. “Knavishly witty.”
adv : in an artful manner; "he craftily arranged to be there when
the decision was announced"; "had ever circumstances
conspired so cunningly?" [syn: craftily, cunningly,
foxily, slyly, trickily, artfully]