Hugutio Pisanus Hugutio Pisanus, Derivationes, p21, p20, 3 Controversor -aris, litigare, decertare, unde hec controversia -e; conversor -aris, simul versari et esse cum aliquo, unde conversabilis -le; diverso -as, variare, obversor -aris, idest conversari, reverso -as, retro versare; tergiversor -aris, idest in varias partes se vertere, decipere, animum quasi tergum huc et illuc vertere, unde tergiversator, deceptor, versipellis, quia animum quasi tergum huc et illuc vertat, nec qualis sit intelligatur, et hec tergiversatio, deceptio, et tergiversabilis -le, deceptorius, habilis ad decipiendum.