Synonyms for Arrogation:

n.

assumption, give, appropriation, seizure, usurpation, preemption. act (noun)
confiscation.
arrogation (noun)
confiscation.
usurpation (noun)
confiscation, seizure, appropriation, preemption.

Other synonyms:

preemption. usurpation. assumption. appropriation, seizure. Other relevant words:
assumption, give, appropriation, seizure, usurpation, preemption.