What is "exessive case"

n. (context grammar English) a form of declension that indicates a change away from a state; the Estonian language and some dialects of Finnish have such a case

The exessive case ( abbreviated ) is a grammatical case that denotes a transition away from a state. It is a rare case found in certain dialects of Finnic languages. It completes the series of "to/in/from a state" series consisting of the translative case, the essive case and the exessive case.