1. being outside the action or authority of a court. 2. outside the usual procedure of justice; legally unwarranted.

What extrajudicially means?

done without the permission of or without using the official legal system : There have been numerous extrajudicial executions of civilians. not done in a court of law: They agreed on an extrajudicial settlement of the dispute.

Why is it called extrajudicial?

Extrajudicial killings are most commonly referred to as "salvaging" in Philippine English. The word is believed to be a direct Anglicization of Tagalog salbahe ("cruel", "barbaric"), from Spanish salvaje ("wild", "savage").