ἆρά γε λόγον ἔχει δυοῖν ἀρχαῖν, ὑλικῆς τε καὶ δραστικῆς → does it in fact have the function of two principles, the material and the active?
ἀντίφωνος, περαῖος, ἐναντίος, ἀντιβατικός, ὑπεναντίος, ἀντίος, ἀντήρης, ἀντίθετος, ἕτερος