The adjective unanimously comes from the same Latin word unanimus which means « a spirit ». So if people think unanimously, they all have the same idea in mind. A vote is unanimous if all voters agree. Marcus Cicero said, « Power is great, the authority of a Senate that is unanimous in its opinions is great. » in agreement or not with a fact, rule or principle Britannica.com: encyclopedia articles on informal agreement in agreement or able to cooperate easily in accordance with what has been said or approved, to think or have the same opinion as anyone, who accepts or accepts something formally, Although you do not want two or more people to feel or do the same way when people are united, they have the same goals or beliefs.