diverge

Concise Oxford English Dictionary © 2008 Oxford University Press:
diverge /dʌɪˈvəːdʒ, dɪ-/

▶verb

• 1 (of a road, route, or line) separate and go in a different direction.

• 2 (of an opinion or approach) differ.

• 3 (diverge from) depart from (a set course or standard).

• 4 Mathematics (of a series) increase without limit as more of its terms are added.

– derivatives
divergence noun,
divergency noun,
diverging adjective.

– origin C17: from med. L. divergere, from L. dis- ‘in two ways’ + vergere ‘to turn or incline’.