UNANIMITY. The agreement of all the persons concerned in a thing in design and opinion. 2. Generally a simple majority (q.v.) of any number of persons is sufficient to do such acts as the whole number can do; for example, a majority of the legislature can pass a law: but there are some cases in which unanimity is required; for example, a traverse jury, composed of twelve individuals, cannot decide an issue submitted to them, unless they are unanimous.