A more thorough explanation:

Term: In Mora
Definition: In Mora means that someone is delaying or failing to do something they promised to do. This term comes from Roman law. It is used to describe a debtor who is not doing what they agreed to do. For example, if someone borrowed money and promised to pay it back by a certain date, but they didn't, they would be considered "in mora." Another example would be if someone promised to deliver goods by a certain date, but they didn't, they would also be "in mora." This term is used to describe a situation where someone is not fulfilling their obligations.