ὀδοῦσι καὶ ὄνυξι καὶ πάσῃ μηχανῇ → tooth and nail | tooth, fang, and claw | in every possible way | by hook or by crook
P. and V. ἄγρυπνος, V. ἄυπνος (also Plato but rare P.), ὀψίκοιτος (lit. late in sleeping).
be sleepless, v.: P. ἀγρυπνεῖν.
