I.of persons, earnest, serious, Xen.; active, zealous, Plut.
3.of men of character and importance, id=Xen.
4.in moral sense, good, opp. to πονηρός, id=Xen.
II.of things, worth one's serious attention, serious, weighty, Theogn., Hdt., attic
2.good of its kind, excellent, Hdt., etc.
III.adv. σπουδαίως, seriously, earnestly, well, Xen., etc.:—comp., -ότερον, id=Xen.; Sup. -ότατα, most carefully, in the best way, Hdt.—There are also irreg. comp. and Sup. σπουδαι-έστερος, -έστατος.