1. (

• assume ,
• usurp ,
• seize ,
• take_over ,
• arrogate

) 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"; "he usurped my rights"; "She seized control of the throne after her husband died" ;

2. (

• usurp

) take the place of; "gloom had usurped mirth at the party after the news of the terrorist act broke" ;