bráthair

Irish

Etymology

From Old Irish bráthair (“brother”), from Proto-Celtic *brātīr, from Proto-Indo-European *bʰréh₂tēr.

Noun

bráthair m (genitive singular bráthar, nominative plural bráithre)

1. (religion) brother (male fellow member of a religious community)
2. monkfish, angelfish

Declension

Declension of bráthair

Irregular

Bare forms Case Singular Plural Nominative bráthair bráithre Vocative a bhráthair a bhráithre Genitive bráthar bráithre Dative bráthair bráithre

Forms with the definite article Case Singular Plural Nominative an bráthair na bráithre Genitive an bhráthar na mbráithre Dative leis an mbráthair don bhráthair leis na bráithre

Related terms

• deartháir (“brother, male sibling”)

Mutation

Irish mutation
Radical	Lenition	Eclipsis
bráthair	bhráthair	mbráthair
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

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Old Irish

Etymology

From Proto-Celtic *brātīr, from Proto-Indo-European *bʰréh₂tēr.

Pronunciation

• IPA^(key): /ˈbraːθirʲ/

Noun

bráthair m (genitive bráthar, nominative plural bráithir)

1. brother, cousin, kinsman

Inflection

Masculine r-stem
	Singular	Dual	Plural
Nominative	bráthair	bráthairL	bráithir
Vocative	bráthair	bráthairL	bráithrea
Accusative	bráthairN	bráthairL	bráithrea
Genitive	bráthar	bráthar	brátharN, bráithreN
Dative	bráthairL	bráithrib	bráithrib
Initial mutations of a following adjective: H = triggers aspiration L = triggers lenition N = triggers nasalization

Derived terms

• bráithremail
• bráthardacht
• bráthardae
• bráthirse
• derbráthair
• sinserbráthair

 

Descendants

• Irish: bráthair
• Manx: braar
• Scottish Gaelic: bràthair

Mutation

Old Irish mutation
Radical	Lenition	Nasalization
bráthair	bráthair pronounced with /β(ʲ)-/	mbráthair
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading

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