to turn aside, as from a route, way, course, etc.

to depart or swerve, as from a procedure, course of action, or acceptable norm.

to digress, as from a line of thought or reasoning.

to cause to swerve; turn aside.

characterized by deviation or departure from an accepted norm or standard, as of behavior.

a person or thing that departs from the accepted norm or standard.

a person whose sexual behavior departs from the norm in a way that is considered socially or morally unacceptable.

Statistics . a variable equal to the difference between a variate and some fixed value, often the mean.

adjective

aberrant , aberrative , circuitous , devious , divergent , excursional , excursionary , excursive , heteroclite , obliquitous , parenthetical , serpentine , straying , tangent , tangential , tortuous

noun

aberrance , aberration , circuity , detour , deviate , deviation , divergence , eccentricity , heteroclite , intransigence , sinuosity , tangency , tortuosity

verb

change , deviate , differ , divagate , divaricate , stray , turn , wander , yaw