c.1380 (implied in tripper), "tread or step lightly, skip, caper," from O.Fr. tripper "strike with the feet" (12c.), from a Gmc. source (cf. M.Du. trippen "to skip, trip, hop," Low Ger. trippeln, Fris. tripje, Du. trappen, O.E. treppan "to tread, trample") related to
trap.