εἰδημόνως

From LSJ

ἡ γὰρ σιωπὴ μαρτυρεῖ τὸ μὴ θέλειν → silence is evidence of unwillingness (Menander)

Source

Spanish

de forma experta, con conocimiento

Greek (Liddell-Scott)

εἰδημόνως: «ἐπιστημόνως» Ἡσύχ.