A contract-law term which stands for those agreements which are without consideration. An example would be a unilateral undertaking, which may bind a person morally, but would not be binding under contract law in those jurisdictions which still require consideration.
A nudum pactum in Latin literally means 'Bare or Naked Promise.' In common law, it refers to a promise that is not legally enforceable for want of consideration. An example of a nudum pactum would be an offer to sell something without a corresponding offer of value in exchange.