- Illegality at the time of agreement [illegal subject matter]
- Misrepresentation/Non-disclosure about a Material Fact
- Ambiguity of a Term
- Mistake about a Material Fact
- Consideration, Lack of
- Unconscionability
- Public Policy
- Incapacity
- Duress
Contracts: Stage 4: Ask Is the Agreement Legally Enforceable? What are the defenses against formation?
(IM AM CUPID)