Where does “lourt” come from?

lourt (Old French) comes from Late Latin lurdus, from Latin luridus, from Latin luror, from Proto-Italic *loiros.

Ancestry of “lourt”, step by step

Step	Language	Word	Meaning
1	Late Latin	lurdus	slow; stupid; slow, heavy; clumsy, stupid
2	Latin	luridus	pale yellow, wan, sallow, lurid; ghastly,...
3	Latin	luror	paleness, pallor, lividness
4	Proto-Italic	*loiros	—

lourt — Etymology, Origin & Word History | Etymology Explorer