Origin: 1175–1225; Middle English chaffare, derivative of chapfare trading journey, equivalent to Old English cēap trade (see cheap) + faru journey; see fare
early 13c., cheffare "buying and selling," probably from O.E. ceap "bargain, sale" (see cheap) + faru "faring, going" (see fare (n.)). In later use, "haggling." The verb is recorded from mid-14c.