cupidity n.

"ardent desire, improper or illicit desire, lustful feeling," mid-14c., from Old French concupiscence and directly from Late Latin concupiscentia "eager desire," from present-participle stem of Latin concupiscere, inceptive of concupere "to be very desirous of," from assimilated form of com-, here perhaps an intensive prefix (see com-), + cupere "to long for" (see cupidity). Used in Vulgate to translate Greek epithymia.

mid-13c., "to desire or wish for inordinately or without regard for the rights of others," from Old French coveitier "covet, desire, lust after" (12c., Modern French convoiter, influenced by con- words), probably ultimately from Latin cupiditas "passionate desire, eagerness, ambition," from cupidus "very desirous," from cupere "long for, desire" (see cupidity). From mid-14c. in a good sense, "desire or wish for eagerly, desire to obtain or possess." Related: Coveted; coveting.