Adjective guileful has 1 sense
  1. crafty, cunning, dodgy, foxy, guileful, knavish, slick, sly, tricksy, tricky, wily - marked by skill in deception; "cunning men often pass for wise"; "deep political machinations"; "a foxy scheme"; "a slick evasive answer"; "sly as a fox"; "tricky Dik"; "a wily old attorney"
    Antonym: artless (indirect, via artful)
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