εὐτραπέλως

From LSJ

Ζεὺς οἶδε μοῖράν τ' ἀμμορίην τ' ἀνθρώπων → Zeus knows what is man's fate and what is not, Zeus knows man's good and bad fortune

Source

French (Bailly abrégé)

adv.
avec souplesse.
Étymologie: εὐτράπελος.

Russian (Dvoretsky)

εὐτρᾰπέλως: искусно, умело, тонко Thuc.

Lexicon Thucydideum

lepide, venuste, charmingly, attractively, 2.41.1.