
1) Latin legal terminology
Found on
https://www.crosswordclues.com/clue/functus-officio

Functus officio, a branch of the doctrine of res judicata prevents the re-opening of a matter before the same court, tribunal or other statutory actor which rendered the final decision in the absence of statutory authority. There are many exceptions. For instance, where a statute authorizes variations of the original decision, the decision maker m...
Found on
http://en.wikipedia.org/wiki/Functus_officio

Lat. This term is applied to something which once had life and power, but which now has no virtue whatsoever. E.g., When an agent has completed the business with which he was entrusted, his agency is functus officio.
Found on
http://www.lectlaw.com/def/f142.htm

Having discharged duty A judicial or official person prevented from taking a matter further because of limitation by certain regulations
Found on
https://www.encyclo.co.uk/local/22448
No exact match found.