lucre

From Middle English lūcre, lucor, lucour, lucur (“gain in money, profit; money; wages; illicit gain; advantage, benefit”), from Old French lucre or Latin lucrum (“advantage, profit; love of gain, avarice”), from Proto-Indo-European leh₂w- (“gain, profit”) + -tlom (variant of *-trom (suffix forming nouns denoting tools or instruments)).