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Ἔρως ἀνίκατε μάχαν → O love, invincible in battle!
vastesco: ĕre,I v. inch. n. vastus, to become desert or waste: ne scelere tuo Thebani vastescant agri, Att. ap. Non. 185, 10.
vāstēscō, ĕre (vastus), intr., devenir désert : Acc. Tr. 600.