usurpation

英 [,juːzɜː'peɪʃən] 美[,jʊzɚ'peʃən]

• n. 篡夺；夺取

1. entry to another's property without right or permission

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"