tricky

Adjective (3)trickier, trickiest

1. not to be trusted“how extraordinarily slippery a liar the camera is — James Agee”Synonyms: slipperyOpposite trustworthySimilar untrustworthy, untrusty
2. having concealed difficulty“a catchy question”“a tricky recipe to follow”Synonyms: catchyOpposite easySimilar difficult, hard
3. marked by skill in deception“cunning men often pass for wise”“a foxy scheme”“a slick evasive answer”“sly as a fox”“tricky Dick”“a wily old attorney”Synonyms: craftycunningdodgyfoxyguilefulknavishslickslytricksywilyOpposite artlessSimilar artful