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
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]