What is the opposite of "agreement"?

The term "agreement" refers to a state in which two or more parties share a common understanding or consent on an issue. It signifies harmony and a consensus between individuals or groups. In contrast, "disagreement" directly indicates a lack of consensus or differing viewpoints. This term embodies the essence of conflict or differing opinions, making it the clear opposite of agreement.

The other options, which include collaboration, cooperation, and support, all imply some form of working together or aiding one another, which can exist even in situations of disagreement. However, they do not represent a state that is contrary to the concept of agreement, focusing instead on partnership and joint efforts. Thus, dissimilarity in opinions or a breakdown of consensus best describes the opposite of agreement.