Uí

See also: Appendix:Variations of "ui"

Irish

Pronunciation

• IPA^(key): /iː/
• Homophones: aoi, í, Í, íoth (Cois Fharraige), ithe (Cois Fharraige), oíche, uí

Noun

Uí m

1. (in surnames) genitive singular of Ó
2. (in historical sept names) nominative plural of Ó

Mutation

Mutated forms of Uí

radical	eclipsis	with h-prothesis	with t-prothesis
Uí	nUí	hUí	not applicable

Note: Certain mutated forms of some words can never occur in standard Modern Irish.
All possible mutated forms are displayed for convenience.

Further reading

• Ó Dónaill, Niall (1977) “Uí”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
• “O'”, in New English-Irish Dictionary, Foras na Gaeilge, 2013–2025