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Adjective: wily (wilier,wiliest)  wI-lee
  1. Marked by skill in deception
    "a wily old attorney";
    - crafty, cunning, dodgy [Brit, informal], foxy, guileful, knavish, slick, sly, tricksy, tricky

Derived forms: wiliest, wilier

See also: artful

Encyclopedia: Wily