εὐδαιμονεῖν

From LSJ

ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm

Source

Greek > English (Woodhouse Verbs Reversed)

(see also εὐδαιμονέω): prosper, be fortunate, be happy, be lucky

Lexicon Thucydideum

omnium rerum copia florere, to abound in all things, 8.24.4, [Vat. Vatican manuscript ηὐδαιμόνησάν τε]