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The illegal encroachment or assumption of the use of authority, power, or property properly belonging to another; the interruption or disturbance of an individual in his or her right or possession.

The term usurpation is also used in reference to the unlawful assumption or seizure of sovereign power, in derogation of the constitution and rights of the proper ruler.

West's Encyclopedia of American Law, edition 2. Copyright 2008 The Gale Group, Inc. All rights reserved.

USURPATION, torts. The unlawful assumption of the use of property which belongs to another; an interruption or the disturbing a man in his right and possession. Toml. Law Dict. h.t.
     2. According to Lord Coke, there are two kinds of usurpation. 1. When a stranger, without right, presents to a church, and his clerk is admitted; and, 2. When a subject uses a franchise of the king without lawful authority. Co. Litt. 277 b.

USURPATION, government. The tyrannical assumption of the government by force contrary to and in violation of the constitution of the country.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
In November 2017, the Office of the Ombudsmanthen led by former graft buster Conchita Carpio-Moralesfiled graft and usurpation of authority chargesagainst the former chief executive.
Martires filed last June a motion with the Sandiganbayan to withdraw the graft and usurpation of authority filed against the respondents following a review of the resolution issued by his predecessor, former Ombudsman Conchita Carpio-Morales.
Martires filed a motion with the Sandiganbayan to withdraw the graft and usurpation of authority filed against Aquino in the Mamasapano massacre that resulted in the death of 44 SAF members.
"We are proud of the mobilization and fearlessness of the Burkinabe people, especially its youth, whose unwavering determination helped to stop the usurpation," he said.
Le suspect sera presente incessamment devant les instances judiciaires pour [beaucoup moins que] escroquerie et usurpation de fonction [beaucoup plus grand que].
He vowed it is high time for federation to review entire situation on realistic grounds so that no grain of the sense of deprivation and usurpation of rights emanate anywhere in the country but people are fully satisfied and spirit of national integrity grow with passage of time.
World sociologists say that leaders who base their rule on constant accusations of collective conspiracies, instrumentalization and usurpation of the institutions and media, as well as (ab)use of the myth in the fight between the good and evil, cause an inestimable damage to the human rights.
The call follows reports about the discovery of a large usurpation of the contents of Palestinian public and private libraries in 1947 by the Haganah, a Jewish paramilitary organization in what was active during the British Mandate of Palestine from 1920 to 1948 and became the core of the Israel Defense Forces (IDF) later on.
"Any usurpation by Israel of Lebanon's oil resources is flagrant violation of international laws and norms, and an attack on the Lebanese sovereignty," he reckoned.