| verb | seize and take control without authority and possibly with force; take as one's right or possession “He assumed to himself the right to fill all positions in the town” |
| verb | take the place of “gloom had usurped mirth at the party after the news of the terrorist act broke” |
| assumption | noun | the act of taking possession of or power over something |
| usurpation | noun | wrongfully seizing and holding (an office or powers) by force (especially the seizure of a throne or supreme authority) |
| usurper | noun | one who wrongfully or illegally seizes and holds the place of another |
| takeover | noun | a sudden and decisive change of government illegally or by force |
| arrogation | noun | seizure by the government |
| arrogator | noun | a person who through conceit makes pretentious claims to rights or advantages that he or she is not entitled to or to qualities that he or she does not possess |