There are 4 definitions of -or in English:

-or1

Syllabification: -or

suffix

(Forming nouns) denoting a person or thing performing the action of a verb, or denoting another agent: escalator governor resistor

Origin

from Latin, sometimes via Anglo-Norman French -eour or Old French -eor (see also -ator).

Definition of -or in:

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Word of the day hubris
Pronunciation: ˈhjuːbrɪs
noun
excessive pride or self-confidence

There are 4 definitions of -or in English:

-or2

Syllabification: -or

suffix

Forming adjectives expressing a comparative sense: minor major

Origin

via Anglo-Norman French from Latin.

Definition of -or in:

There are 4 definitions of -or in English:

-or3

Syllabification: -or

suffix

Forming nouns denoting a state or condition: error pallor terror

Origin

from Latin, sometimes via Old French -or, -ur.

Definition of -or in:

There are 4 definitions of -or in English:

-or4

Entry from British & World English dictionary

suffix

US form of -our2.

Definition of -or in: