Where does “éréthisme” come from?

éréthisme (French) comes from Ancient Greek ἐρεθισμός, from Ancient Greek ἐρεθίζειν — to irritate.

Ancestry of “éréthisme”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἐρεθισμός	—
2	Ancient Greek	ἐρεθίζειν	to irritate

éréthisme — Etymology, Origin & Word History | Etymology Explorer