Knav·ish·ly, adv.
1. In a knavish manner; dishonestly; fraudulently.
2. Mischievously; waggishly; roguishly. “Knavishly witty.”
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knavishly
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]