(v. t.) To seize, and hold in possession, by force, or without right; as, to usurp a throne; to usurp the prerogatives of the crown; to usurp power; to usurp the right of a patron is to oust or dispossess him.
USURP
Meaning of USURP in English
Webster's English dictionary. Английский словарь Webster. 2012