Where does “lunatique” come from?

lunatique (Old French) comes from Latin lūnāticus, from Latin lūna, from Old Latin losna, from Proto-Italic louksnā, from Proto-Indo-European lówksneh₂, from Proto-Indo-European lewḱ-, from Proto-Indo-European lewk- — bright; to shine; to see.

Ancestry of “lunatique”, step by step

lunatique traces back through two separate lines of ancestry.

via Latin lūnāticus

StepLanguageWordMeaning
1LatinlūnāticusOf, or living on, the moon
2Latinlūna
3Old Latinlosna
4Proto-Italiclouksnāmoon
5Proto-Indo-Europeanlówksneh₂moon
6Proto-Indo-Europeanlewḱ-lynx
7Proto-Indo-Europeanlewk-bright; to shine; to see

via Late Latin lunaticus

StepLanguageWordMeaning
1Late Latinlunaticusmoonstruck; Of, or living on, the moon;...

Words derived from “lunatique

Every word from Proto-Indo-European lewk-Every word from Proto-Indo-European lewḱ-Every word from Proto-Indo-European lówksneh₂