Where does “úaisliu” come from?

úaisliu (Old Irish) comes from Old Irish úasal, from Proto-Celtic ouxselos, from Proto-Indo-European h₃ewps-.

Ancestry of “úaisliu”, step by step

StepLanguageWordMeaning
1Old Irishúasalhigh; lofty, high-born; noble, gallant, genteel
2Proto-Celticouxseloshigh, elevated
3Proto-Indo-Europeanh₃ewps-—
Every word from Proto-Indo-European h₃ewps- →Every word from Proto-Celtic ouxselos →Every word from Old Irish úasal →
úaisliu — Etymology, Origin & Word History | Etymology Explorer