Deviate

To depart from an established course, standard, or norm; to diverge from what is expected or typical.

From Latin 'deviatus,' past participle of 'deviare' (to turn aside from the road), from 'de-' (away from) and 'via' (road, way). The literal meaning of leaving the road evolved into the figurative sense of departing from norms. Entered English in the 17th century.