Unanimity (noun)

1. Agreement by all people involved.
2. Complete agreement on a particular issue.

Origin:

Late middle english: from old french unanimite, based on latin unanimus "of one mind" (see unanimous).

Examples:

1. The decision was made by unanimity among the board members.
2. There was a unanimity of opinion among the experts regarding the cause of the accident.
3. The players showed unanimity in their support for the coach.
4. The unanimity of the vote surprised everyone in the room.
5. The conference was marked by a remarkable unanimity of views on the important issues.