knavishly

knave

K0086600 (nāv)n.1. An unprincipled, crafty fellow.2. a. A male servant.b. A man of humble birth.3. Games See jack.

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[Middle English, from Old English cnafa, boy, male servant.]

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knav′ish adj.knav′ish·ly adv.knav′ish·ness n.

Thesaurus

Adv.

1.

knavishly - in an artful manner; "he craftily arranged to be there when the decision was announced"; "had ever circumstances conspired so cunningly?"craftily, foxily, slyly, trickily, cunningly, artfully