Unconscionable Bargain
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
A contract which no man in his senses, not under delusion, would make, on the one hand, and which no fair and honest man would accept, on the other.
Hume v. U. S., 132 U. S. 406, 10 Sup. Ct 134, 33 L. Ed. 393.