WordNet sense 1 (characterized by insincerity or deceit; evasive):

shifty

WordNet sense 2 (not worthy of trust or belief):

untrusty

WordNet sense 3 (indirect in departing from the accepted or proper way; misleading):

oblique

WordNet sense 4 (extended senses; not direct in manner or language or behavior or action):

indirect

WordNet sense 5 (deviating from a straight course):

circuitous, roundabout