Merriam-Webster's Collegiate® Dictionary, 11th Edition
DEVIATE
I. verb (-ated; -ating) see: way
Date: circa 1633
intransitive verb to stray especially from a standard, principle, or topic, to depart from an established course or norm , transitive verb to cause to turn out of a previous course, see: swerve deviator noun deviatory adjective
II. noun
Date: 1912
one that deviates from a norm, a statistical variable that gives the deviation of another variable from a fixed value (as the mean),
III. adjective
Date: 1929
departing significantly from the behavioral norms of a particular society