arrogating
ar-ro-gat-ing
verb
Claiming or seizing power, rights, or privileges without justification.
"He was arrogating authority he didn't possess."
Thesaurus
Synonyms: arrogate, assign, assume, usurp, take over, seize, lay claim, claim
Antonyms: forego, forfeit, forgo, give up, throw overboard, waive