1. The act or an instance of taking unfair commercial advantage of another, esp. by fraudulent means. [Cases: Contracts 1; Sales 1(1). C.J.S. Contracts §§ 2–3, 9, 12; Sales§§ 2, 9, 29, 48.]
2. The act or an instance of defeating one’s own purpose by going too far. — overreach, vb.