Unilateral Act Law and Legal Definition

Unilateral act refers to an act in which only one party’s will operate. Testamentary disposition or exercise of a power of appointment are unilateral acts as both involve the will of one party alone. In case of testamentary disposition the person who makes the will decides to whom the property should be given.

Like wise a unilateral contract is one in which only one party makes an express promise, or undertakes a performance without securing a reciprocal agreement from the other party.