Where does “lessier” come from?

lessier (Old French) comes from Latin laxo, from Latin laxus, from Proto-Indo-European (s)lēg- — to let go; weak, feeble; loose; dissolute, lewd;...

lessier (Old French): Alternative form of laissier; to permit, to let

Definitions

Step	Language	Word	Meaning
1	Latin	laxo	I extend, expand; I open, make wide; I undo,...
2	Latin	laxus	wide, spacious, roomy; yielding; loose, slack,...
3	Proto-Indo-European	(s)lēg-	to let go; weak, feeble; loose; dissolute, lewd;...