ἀστενάκτως
From LSJ
Τὸ μανθάνειν δ' ἥδιστον εὖ λέγοντος, εἰ κέρδος λέγοι → It is the sweetest thing to learn from one speaking well, if they speak profitably
French (Bailly abrégé)
adv.
sans gémir.
Étymologie: ἀστένακτος.
Russian (Dvoretsky)
ἀστενάκτως: без стонов Plut.