French word sourire comes from Latin rideo, and later Latin subrideo (I smile.)

Detailed word origin of sourire

Dictionary entry	Language	Definition
rideo	Latin (lat)	(intransitive) I laugh.. (transitive) I laugh at, ridicule, mock.
subrideo	Latin (lat)	I smile.
sourire	French (fra)	To smile Smile.

Words with the same origin as sourire