The etymology given by Wiktionary[0] is: > From Middle English purchasen, from Anglo-Norman purchacer (“seek to obtain”) from pur- (from Latin pro-) + chac(i)e

The etymology given by Wiktionary[0] is: > From Middle English purchasen, from Anglo-Norman purchacer (“seek to obtain”) from pur- (from Latin pro-) + chac(i)er (“to chase, pursue”). Compare Old French porchacier (“to follow, to chase”), which has given French pourchasser (“to chase without relent”). [0]: https://en.wiktionary.org/wiki/purchase https://en.wiktionary.org/wiki/purchase