usurpation (n.)

  1. entry to anothers property without right or permission

    [ Syn: trespass , encroachment , violation , intrusion ]

  2. wrongfully seizing and holding (an office or powers) by force (especially the seizure of a throne or supreme authority); a succession of generals who ruled by usurpation'

The dictionary is based on the WordNet Electronic Lexical Database.
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