Where does “fánadóireacht” come from?

fánadóireacht (Irish) comes from Irish fánadóir, from Irish -adóir, from Old Irish -atóir, from Latin -ator, from Latin -tor, from Proto-Italic -tōr, from Proto-Indo-European -tōr, from Proto-Indo-European -tor-s.

Ancestry of “fánadóireacht”, step by step

StepLanguageWordMeaning
1Irishfánadóir
2Irish-adóirSuffix appended to words to create an agent noun,...
3Old Irish-atóir
4Latin-ator-ator, -er; second-person singular future passive...
5Latin-tor-er
6Proto-Italic-tōrForms agent nouns to verb stems
7Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
8Proto-Indo-European-tor-s
Every word from Proto-Indo-European -tor-sEvery word from Latin -torEvery word from Irish -adóir