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Ἔρως ἀνίκατε μάχαν → O love, invincible in battle!
heedless: P. and V. ῥᾴθυμος.
off one's guard: P. and V. ἀφύλακτος, ἄφρακτος.
rude: Ar. and P. ἄγροικος; see forgetful.