de- ‘away from’ + via ‘way’

source: [スケボーで走るデブが道を逸れていって転ぶGIF画像｜無料GIF画像検索 GIFMAGAZINE 692585]

verb | ˈdēvēˌāt | no object

depart from an established course:

〈乗り物などが〉 【進路から】それる «from» .

e.g. you must not deviate from the agreed route.

depart from usual or accepted standards:

〈人が〉 【基準などから】逸脱する, 脱線する

e.g. those who deviate from society's values.

noun & adjective | ˈdēvēət |

old-fashioned term for deviant.

deviator | ˈdēvēˌādər | noun

mid 16th century (as an adjective in the sense ‘remote’): from late Latin deviat- ‘turned out of the way’, from the verb deviare, from de- ‘away from’ + via ‘way’. The verb dates from the mid 17th century.