Main entry: take over, seize, usurp, assume, arrogate
Definition: seize and take control without authority and possibly with force; take as one's right or possession
Usage: 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
Main entry: usurp
Definition: take the place of
Usage: gloom had usurped mirth at the party after the news of the terrorist act broke