σπουδῇ
From LSJ
τὸ σὸν εἰς ἡμᾶς ἐνδιάθετον → your disposition towards us
English (Woodhouse)
eagerly, energetically, enthusiastically, gladly, industriously, quickly, in hot haste, with zeal
Dutch (Woordenboekgrieks.nl)
σπουδῇ adv. dat. sing. van σπουδή.