Inter se is a Latin phrase meaning "between or amongst themselves.” It describes the rights and obligations that arise only within a particular group or between individuals, who, in a specific set of circumstances, have similar legal status. Sometimes, it is also used to distinguish between those who have the rights or obligations and those who do not.
In the context of family law, a couple can agree before the marriage, that if a divorce occurs, they will divide the property differently than the law would divide it. This signifies an agreement inter se or between themselves.
[Last updated in April of 2022 by the Wex Definitions Team]