ἀνωδύνως
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
French (Bailly abrégé)
adv.
sans douleur.
Étymologie: ἀνώδυνος.
Russian (Dvoretsky)
ἀνωδύνως: без боли, безболезненно (ἀ. καὶ ἀπόνως Plut.).