ἱππομαχεῖν
From LSJ
ῥίζα γὰρ πάντων τῶν κακῶν ἐστιν ἡ φιλαργυρία → root of all the evils is the love of money, for every possible kind of evil can be motivated by the love of money
Greek > English (Woodhouse Verbs Reversed)
(see also ἱππομαχέω): fight cavalry battle
Lexicon Thucydideum
equestre praelium committere, to engage in a cavalry battle, 4.124.3.