Where does “kay” come from?

kay (Anglo-Norman) comes from Gaulish cagiíum, from Proto-Celtic kagyom, from Proto-Indo-European kagʰyóm, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “kay”, step by step

StepLanguageWordMeaning
1Gaulishcagiíumenclosure
2Proto-Celtickagyompen, enclosure
3Proto-Indo-Europeankagʰyómenclosure, hedge
4Proto-Indo-European-yósCreates adjectives from noun or verb stems

Words derived from “kay”

Every word from Proto-Indo-European -yós →Every word from Proto-Indo-European kagʰyóm →Every word from Proto-Celtic kagyom →