[-or] n suffix [ME, fr. OF -eur, -eor & L -or; OF -eur, fr. L -or; OF -eor, fr. L -ator, fr. -a-, v. stem + -tor, agent suffix; akin to Gk -tor, agent suffix, Skt -ta]: one that does a (specified) thing "grantor"
[2]-or n suffix [ME, fr. OF -eur, fr. L -or]: condition: activity "demeanor"