French word rire comes from Latin rideo, and later Latin *rido ((Vulgar Latin) I laugh.)

Detailed word origin of rire

Dictionary entry	Language	Definition
rideo	Latin (lat)	(intransitive) I laugh.. (transitive) I laugh at, ridicule, mock.
*rido	Latin (lat)	(Vulgar Latin) I laugh.
rire	Old French (fro)	To laugh.
rire	Middle French (frm)	To laugh.
rire	French (fra)	To laugh (de at, about) Laugh.

Words with the same origin as rire