Cupid

"eager desire to possess something," mid-15c., from Anglo-French cupidite and directly from Latin cupiditatem (nominative cupiditas) "passionate desire, lust; ambition," from cupidus "eager, passionate," from cupere "to desire." This is perhaps from a PIE root *kup-(e)i- "to tremble; to desire," and cognate with Sanskrit kupyati "bubbles up, becomes agitated;" Old Church Slavonic kypeti "to boil;" Lithuanian kupėti "to boil over;" Old Irish accobor "desire."

Despite the primarily erotic sense of the Latin word, in English cupidity originally, and still especially, means "desire for wealth."

1909, American English, coined by their inventor and illustrator, Rose C. O'Neill (1874-1944), as an altered form of a diminutive of Cupid. Kewpie doll is from 1916.