Dispute is both a verb and a noun. A dispute is a disagreement, argument, or controversy—often one that gives rise to a legal proceeding (such as arbitration, mediation, or a lawsuit).
The opposing parties are said to be adverse to one another (see also adverse party).
To dispute is the corresponding verb. It means to participate in a dispute or to make a particular argument (in a dispute).
[Last updated in June of 2021 by the Wex Definitions Team]