παραλογιστής
From LSJ
Κούφως φέρειν δεῖ τὰς παρεστώσας τύχας → Fiet levis fortuna, si leviter feras → Leicht muss man tragen das bestehende Geschick
English (LSJ)
οῦ, ὁ,
A one who cheats by false reckoning, Arist.EE1232a14 ; or by false reasoning, δεινὸς ὁ τῦφος π. M.Ant.6.13, cf. Procl.Par.Ptol.225 ; cheat, Artem.4.57.