-óir

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See also: oir, OIr, oír, óir, óír, òir, oïr, and -oir

Irish

Alternative forms

-eoir (slender form)

Etymology

From Old Irish, from Latin -or.

Suffix

-óir m

-er; suffix appended to words to create an agent noun, indicating a person who does (or a thing that does) something.
‎bád (“boat”) + ‎-óir → ‎bádóir (“boatman”)

‎Béarla (“English”) + ‎-óir → ‎Béarlóir (“Anglophone, English-speaker”)

‎focal (“word”) + ‎-óir → ‎foclóir (“dictionary”)

‎loisc (“burn, scorch”) + ‎-óir → ‎loisceoir (“incinerator”)

Usage notes

The form is -eoir when the stem ends in a slender consonant.
All nouns in -óir are masculine nouns of the third declension;
When attaching to verbs, may use the participle form as the stem:
cuidigh (“help”), pp. ‎cuidithe + ‎-óir → ‎cuiditheoir (“helper”)

tiomsaigh (“collect, compile”), pp. ‎tiomsaithe + ‎-óir → ‎tiomsaitheoir (“collector, compiler”)

tuismigh (“procreate”), pp. ‎tuismithe + ‎-óir → ‎tuismitheoir (“parent”)
- or the verb stem:
  ‎úsáid (“use”) + ‎-óir → ‎úsáideoir (“user”)
  
  ‎imir (“play”) + ‎-óir → ‎imreoir (“player”)
  
  ‎modhnaigh (“moderate”) + ‎-óir → ‎modhnóir (“moderator”)

Declension

Declension of -óir

Third declension

Bare forms:

Case	Singular	Plural
Nominative	-óir	-óirí
Vocative	a -óir	a -óirí
Genitive	-óra	-óirí
Dative	-óir	-óirí

Forms with the definite article:

Case	Singular	Plural
Nominative	an -óir	na -óirí
Genitive	an -óra	na -óirí
Dative	leis an -óir don -óir	leis na -óirí

Derived terms

Irish terms suffixed with -óir

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