σπουδῇ
From LSJ
Ὥς ἐστ' ἄπιστος (ἄπιστον) ἡ γυναικεία φύσις → Muliebris o quam sexus est infida res → Wie unverlässlich ist die weibliche Natur
English (Woodhouse)
eagerly, energetically, enthusiastically, gladly, industriously, quickly, in hot haste, with zeal
Dutch (Woordenboekgrieks.nl)
σπουδῇ adv. dat. sing. van σπουδή.