Where does “анти-” come from?

анти- (Russian) comes from Ancient Greek ἀντι-, from Ancient Greek ᾰ̓ντῐ́ — opposite.

анти- (Russian): anti-

Definitions

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