Ó Cathasaigh

Irish

Etymology

From Old Irish cathaisech (“vigilant; noisy”). By surface analysis, cathais (“vigil, watch”) +‎ -ach. Compare cathaiseach.

Pronunciation

• IPA^(key): /ˈkahəsˠiː/

Proper noun

Ó Cathasaigh m (genitive Cathasaigh)

1. a male surname from Old Irish, feminine equivalent Ní Chathasaigh, equivalent to English Casey

References

• Entries containing “Ó Cathasaigh” in English-Irish Dictionary, An Gúm, 1959, by Tomás de Bhaldraithe.