Where does “laches” come from?

laches (Old French) comes from Old French lachesse, from Old French laschier, from Latin laxico, from Latin laxō, from Latin laxus, from Proto-Indo-European (s)lēg- — to let go; weak, feeble; loose; dissolute, lewd;...

Ancestry of “laches”, step by step

Step	Language	Word	Meaning
1	Old French	lachesse	laxness
2	Old French	laschier	to release; to let go of
3	Latin	laxico	—
4	Latin	laxō	to extend, expand
5	Latin	laxus	wide, spacious, roomy; yielding; loose, slack,...
6	Proto-Indo-European	(s)lēg-	to let go; weak, feeble; loose; dissolute, lewd;...

Words derived from “laches”

laches

Every word from Proto-Indo-European (s)lēg- →Every word from Latin laxus →Every word from Latin laxō →