diverge

dʌɪˈvəːdʒ
dɪˈvəːdʒ

verb

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

the flight path diverged from the original flight plan

separate,part,disunite,fork,branch off,divide,subdivide,split,go in different directions,go separate ways,bifurcate,divaricate,ramify