Where does “Marksaght” come from?

Marksaght (Manx) comes from Manx -aght, from Old Irish -acht, from Proto-Celtic -axtā, from Proto-Celtic axtā.

Ancestry of “Marksaght”, step by step

StepLanguageWordMeaning
1Manx-aghtNominal suffix, used to form abstract ideas or...
2Old Irish-acht-ness, -hood; forms abstract nouns
3Proto-Celtic-axtā—
4Proto-Celticaxtā—
Every word from Proto-Celtic axtā →Every word from Manx -aght →Every word from Old Irish -acht →