usurper
🇺🇸
/juːˈzɜːrpər/
🇬🇧
/juːˈzɜːpə(r)/
someone who takes control of a position or power without having the right to do so
The people were angry at the usurper who seized the throne without any right.
人们对于那个没有权利就夺取王位的篡位者感到愤怒。