vigilante

Vigilante entered English in the 19th century, borrowed from the Spanish word of the same spelling which meant “watchman, guard” in that language. The Spanish word can be traced back to the Latin vigilare, meaning “to keep awake.” The earliest use of the word in English was to refer to a member of a vigilance committee, a committee organized to suppress and punish crime summarily, as when the processes of law appear inadequate. The word may often be found in an attributive role, as in the phrases “vigilante justice,” or “vigilante group.” In this slightly broadened sense it carries the suggestion of the enforcement of laws without regard to due process or the general rule of law.