διασφάλλω

A. overturn utterly, τὴν τέχνην Luc. Abd. 17:—Pass., to fail of, be disappointed of, τινός Aeschin. 2.35,3.91, D.S. 20.10; τῇ προνοία, ἐν πράξεσι, Plb. 5.81.7,4.14.3, cf. Arist. Ath. 19.3; πάντα δ. Vett.Val. 116.34.