fír

• IPA^(key): /fʲiːɾʲ/^[1]
• Homophone: fíor- (one pronunciation)

See the etymology of the corresponding lemma form.

fír

1. inflection of fíor:
   1. vocative/genitive singular masculine
   2. (archaic) dative singular feminine

See the etymology of the corresponding lemma form.

• fighir (superseded)

fír

1. (archaic, Munster) second-person singular present indicative/subjunctive of figh

Nominative singular all genders; feminine and neuter vocative singular; masculine and neuter accusative and dative singular; genitive plural all genders:

• IPA^(key): [ɸʲiːr]

Masculine vocative singular; masculine and neuter genitive singular; feminine accusative and dative singular; masculine nominative plural:

• IPA^(key): [ɸʲiːrʲ]

From Proto-Celtic *wīros.

fír

1. true
   • c. 800, Würzburg Glosses on the Pauline Epistles, published in Thesaurus Palaeohibernicus (reprinted 1987, Dublin Institute for Advanced Studies), edited and with translations by Whitley Stokes and John Strachan, vol. I, pp. 499–712, Wb. 22^b23

     Ci as·bera nech ro·pïa nem cía du·gneid na rétu sa, nípa fír.

     Even if anyone says you pl will have heaven although you do these things, it will not be true.

2. milky
   • teora ferbba fira .i. teora bae blechta

     Three cows with milk

o/ā-stem
Singular	Masculine	Feminine	Neuter
Nominative	fír	fír	fír
Vocative	fír
Accusative	fír	fír
Genitive	fír	fíre	fír
Dative	fír	fír	fír
Plural	Masculine	Feminine/neuter
Nominative	fír	fíra
Vocative	fíru fíra†
Accusative	fíru fíra†
Genitive	fír
Dative	fíraib
Notes	† not when substantivized

• Irish: fíor
• Manx: feer
• Scottish Gaelic: fìor

From Proto-Celtic *wīrom.

fír n

1. truth

   Synonym: fírinne

2. milk

Neuter o-stem
	Singular	Dual	Plural
Nominative	fírN	fírN	fírL, fíra
Vocative	fírN	fírN	fírL, fíra
Accusative	fírN	fírN	fírL, fíra
Genitive	fírL	fír	fírN
Dative	fírL	fíraib	fíraib
Initial mutations of a following adjective: H = triggers aspiration L = triggers lenition N = triggers nasalization

• Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “fír”, in eDIL: Electronic Dictionary of the Irish Language