英语词源字典 - 在线词源网站

cacoethes (n.)[cacoethes 词源字典]: "itch for doing something," 1560s, from Latinized form of Greek kakoethes "ill-habit, wickedness, itch for doing (something)," from kakos "bad" (see caco-) + ethe- "disposition, character" (see ethos). Most famously, in Juvenal's insanabile scribendi cacoethes "incurable passion for writing."[cacoethes etymology, cacoethes origin, 英语词源]
greedy (adj.): Old English grædig (West Saxon), gredig (Anglian) "voracious, hungry," also "covetous, eager to obtain," from Proto-Germanic *grædagaz (cognates: Old Saxon gradag "greedy," Old Norse graðr "greed, hunger," Danish graadig, Dutch gretig, Old High German gratag "greedy," Gothic gredags "hungry"), from *græduz (cognates: Gothic gredus "hunger," Old English grædum "eagerly"), possibly from PIE root *gher- (5) "to like, want" (source of Sanskrit grdh "to be greedy").

In Greek, the word was philargyros, literally "money-loving." A German word for it is habsüchtig, from haben "to have" + sucht "sickness, disease," with sense tending toward "passion for."
virtu (n.): "excellence in an object of art, passion for works of art," 1722, from Italian virtu "excellence," from Latin virtutem (nominative virtus) "virtue, goodness, manliness" (see virtue). The same word as virtue, borrowed during a period when everything Italian was in vogue. Sometimes spelled vertu, as though from French, but this sense of the word is not in French.