WordWeb Online

1. Entry to another's property without right or permission
   - 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"

Derived forms: usurpations

See also: usurp

Type of: actus reus, capture, gaining control, misconduct, seizure, wrongdoing, wrongful conduct

Encyclopedia: Usurpation