及物动词

1. 夺取；篡夺；侵占
If you say that someone usurps a job, role, title, or position, they take it from someone when they have no right to do this.

1. seize and take control without authority and possibly with force
take as one's right or possession

e.g. He assumed to himself the right to fill all positions in the town
he usurped my rights
She seized control of the throne after her husband died

Synonym: assumeseizetake overarrogate

2. take the place of

e.g. gloom had usurped mirth at the party after the news of the terrorist act broke