con dificultad
From LSJ
αἰὲν ἀριστεύειν καὶ ὑπείροχον ἔμμεναι ἄλλων → always strive for excellence and prevail over others (Iliad 6.208, 11.784)
Spanish > Greek
δυσχερῶς, δυσπετῶς, δυσπετέως, δυσπειθῶς, δυσνοήτως, δυσχρήστως, δυσφορήτως, δυστραπέλως, δυσκόλως, ἀγαπητῶς, γλίσχρως, γλισχρῶς