arrogate

/ˈɛrəˌɡeɪt/

transitive verb

Take or claim (something) without justification.

they arrogate to themselves the ability to divine the nation’s true interests

assume,take,take on,take over,secure,acquire,seize,expropriate,take possession of,help oneself to,make free with,appropriate,steal,wrest,usurp,commandeer,hijack,annex,claim,lay claim to