- -or1suffix (forming nouns) denoting a person or thing performing the action of a verb, or denoting another agent: escalator.Originfrom L., sometimes via Anglo-Norman Fr. -eour or OFr. -eor (see also -ator).————————-or2suffix forming nouns denoting a state or condition: terror.Originfrom L., sometimes via OFr. -or, -ur.————————-or3suffix forming adjectives expressing a comparative sense: junior.Originvia Anglo-Norman Fr. from L.————————-or4suffix US form of -our1.
English new terms dictionary. 2014.