reverse

Reverse comes from Middle English revers and reversen, borrowed through Anglo-Norman and Middle French from Latin reversus and reversō, both built from re- ('back') plus versō ('to turn').

The noun and verb forms entered English separately but from the same Latin root — one from the participle reversus, the other from the verb reversō — showing how a single Latin idea of turning back split into two related English words.

Reverse is a doublet of revers, meaning both words descend from the same Latin source but arrived in English by slightly different paths.