UNCONSCIONABILITY CHANGE OF POSITION VOIDABLE MUTUAL RESCISSION UNJUST ENRICHMENT RELIANCE REPRESENTEE UNENFORCEABLE ORAL BILATERAL UNDUE INFLUENCE DURESS REPRESENTOR VOID Type of mistake where each party has a different belief about the agreement Situation where one party to a contract has an unfair advantage over the other party Type of contract declared by a court not to have existed at all Legal basis for the doctrine that money paid under mistake of fact can be recovered Person who makes a statement to another person when negotiating a contract Contract which, although valid, can no longer confer rights a court will uphold Type of remedy where a court restores the parties in a contract to original positions Essential part of any claim based on misrepresentation Where one party to a contract exercises a position of special trust over the other Defence to a claim for refund of mistakenly paid money which may succeed Force or pressure used to by one person to make another person enter into a contract Type of contract which one (but not the other) party can choose to cancel or enforce