/dee"vee euhnt/ , adj.
1. deviating or departing from the norm; characterized by deviation: deviant social behavior.
n.
2. a person or thing that deviates or departs markedly from the accepted norm.
[ 1350-1400; ME deviant- (s. of devians, prp. of deviare to DEVIATE), equiv. to L de- DE- + vi ( a ) road, way + -ant- -ANT ]