Misfeasance: Improperly doing something which a person has a legal right to do. Contrast with nonfeasance.
Misjoinder
Misjoinder: When a person has been wrongly named as a party to a law suit, a court will usually amend the proceedings to strike out the name of the misjoined party and substitute the person who should have been joined.
Misrepresentation
Misrepresentation: False material statement which induces a party to enter into a contract grounds for rescission of the contract.