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Definition 2025

áth

áth

See also: ath, ath-, and àth

Irish

Noun

áth m ‎(genitive singular átha, nominative plural áthanna)

(geography) ford
spawning bed (in river)
opening

Declension

Declension of áth

Third declension

Bare forms:

Case	Singular	Plural
Nominative	áth	áthanna
Vocative	a áth	a áthanna
Genitive	átha	áthanna
Dative	áth	áthanna

Forms with the definite article:

Case	Singular	Plural
Nominative	an t-áth	na háthanna
Genitive	an átha	na n-áthanna
Dative	leis an áth don áth	leis na háthanna

Mutation

Irish mutation
Radical	Eclipsis	with h-prothesis	with t-prothesis
áth	n-áth	háth	t-áth
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

References

“áth” in Dictionary of the Irish Language, Royal Irish Academy, 1913–76.
“áṫ” in Foclóir Gaeḋilge agus Béarla, Irish Texts Society, 1927, by Patrick S. Dinneen.
Franz Nikolaus Finck, 1899, Die araner mundart, Marburg: Elwert’sche Verlagsbuchhandlung, vol. II, 14.
"áth" in Foclóir Gaeilge-Béarla, An Gúm, 1977, by Niall Ó Dónaill.

Old Irish

Etymology

From Proto-Celtic *yātus ‎(“ford”).

Noun

áth m

(geography) ford (commonly as scene of battle or single combat)
(by extension) open space or hollow between two objects

Inflection

Masculine u-stem
	Singular	Dual	Plural
Nominative
Vocative
Accusative
Genitive
Dative
Initial mutations of a following adjective: ^H = triggers aspiration ^L = triggers lenition ^N = triggers nasalization

Descendants

Irish: áth
Manx: aah, aae
Scottish Gaelic: àth

Mutation

Old Irish mutation
Radical	Lenition	Nasalization
áth	unchanged	n-áth
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

References

“áth” in Dictionary of the Irish Language, Royal Irish Academy, 1913–76.