adjective
1.
Synonyms: sly 2, artful, astute, crafty, cunning, deep, foxy, insidious, tricky, wily
Antonyms: guileless
2.
Synonyms: underhand , devious, duplicitous, indirect, shifty, sneaking, sneaky, underhanded
GUILEFUL
Meaning of GUILEFUL in English
Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003