The word "unanimous" is an adjective that we use to describe opinions, judgments, and decisions in which every member of a group agrees. There’s 100 percent agreement on something:
The decision made by the jury was unanimous: The defendant was guilty of murder.
The board members of the company came to a unanimous decision and fired the CEO.
U.S. Supreme Court decisions are rarely unanimous.
There was not unanimous support for the construction of a new light rail line through the city.
The adverb form of this word is "unanimously."
The school board voted unanimously to build a new elementary school.
The children decided unanimously to play outside in the snow instead of inside in the gymnasium.
The noun form of this word is "unanimity."
In a rare show of unanimity, the city council approved the builder’s plans to construct the apartment building.
Unanimity is more easily achieved among members of a small group.