WILY
crafty, cunning, dodgy, foxy, guileful, knavish, slick, sly, tricksy, tricky, wily
(adjective) 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 Dick”; “a wily old attorney”
Source: WordNet® 3.1
Etymology
Adjective
wily (comparative wilier or more wily, superlative wiliest or most wily)
Sly, cunning, full of tricks
Synonyms
• See also wily
Source: Wiktionary
Wil"y, a. [Compar. Wilier; superl. Wiliest.] Etym: [From Wile.]
Definition: Full of wiles, tricks, or stratagems; using craft or stratagem
to accomplish a purpose; mischievously artful; subtle. "Wily and
wise." Chaucer. "The wily snake." Milton.
This false, wily, doubling disposition of mind. South.
Syn.
– Cunning; artful; sly; crafty. See Cunning.
Source: Webster’s Unabridged Dictionary 1913 Edition