1. (a.) Going out of the right or common course; going astray; erring; not straightforward; as, a devious scheme\.

2. (a.) Out of a straight line; winding; varying from directness; as, a devious path or way

Byzantine O-shaped aberrant aberrative ambagious amoral anfractuous artful backhand backhanded balled up bending calculating canny circuitous circular complex complicated confounded confused conscienceless convoluted corrupt corrupted crabbed crafty criminal crooked cunning curving daedal dark deceitful deceptive deflectional departing designing desultory deviant deviating deviative deviatory digressive discursive dishonest dishonorable divagational divergent diverting double-dealing doubtful dubious duplicitous elaborate embrangled entangled errant erratic erring evasive excursive felonious fishy fouled up foxy fraudulent furtive guileful helical ill-got ill-gotten immoral implicated indirect insidious insincere intricate involuted involved knotted knowing labyrinthian labyrinthine left-handed lonesome loused up many-faceted matted mazy meandering messed up misleading mixed up mucked up multifarious not kosher oblique orbital out-of-the-way pawky perplexed planetary plotting questionable rambling ramified remote removed retired rotary rotten round roundabout roving scheming screwed up secret secretive serpentine shady shameless shifting shifty shrewd side sidelong sinister sinistral sinuous slick slippery sly smooth snaky snarled sneaking sneaky spiral stray subtile subtle surreptitious suspicious swerving tangled tangly tortuous treacherous tricky turning twisted twisting unconscienced unconscientious unconscionable underhand underhanded undirected unethical unprincipled unsavory unscrupulous unstraightforward vagrant veering vulpine wandering wily winding without remorse without shame zigzag