διασφάλλω
From LSJ
συμπεφύκασι γὰρ αἱ ἀρεταὶ τῷ ζῆν ἡδέως (Epicurus' Letter to Menoeceus via Diogenes Laertius 10.132.10) → The virtues are part and parcel of the stress-free life
English (LSJ)
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.