Where does “antimilitariste” come from?

antimilitariste (French) comes from French anti-, from Ancient Greek ἀντι-, from Ancient Greek ᾰ̓ντῐ́ — opposite.

antimilitariste (French): antimilitarist

Definitions

Step	Language	Word	Meaning
1	French	anti-	anti
2	Ancient Greek	ἀντι-	anti-, against; like, reminiscent of
3	Ancient Greek	ᾰ̓ντῐ́	opposite