Where does “aicsin” come from?

aicsin (Middle Irish) comes from Old Irish aicsiu, from Old Irish ad·cí, from Proto-Celtic *adkʷiseti, from Proto-Indo-European kʷeys-, from Proto-Indo-European kʷey- — to pay; to avenge.

Ancestry of “aicsin”, step by step

StepLanguageWordMeaning
1Old Irishaicsiu
2Old Irishad·císee; sees, notices, observes; perceives,...
3Proto-Celtic*adkʷisetito see
4Proto-Indo-Europeankʷeys-to see; to heed
5Proto-Indo-Europeankʷey-to pay; to avenge
Every word from Proto-Indo-European kʷey-Every word from Proto-Indo-European kʷeys-Every word from Proto-Celtic *adkʷiseti
aicsin — Etymology, Origin & Word History | Etymology Explorer