tillskansa sig znamená v Angličtina

arrogate [arrogated, arrogating, arrogates]▼(to appropriate or lay claim to something without right)
verb
[UK: ˈæ.rə.ɡeɪt] [US: ˈæro.ˌɡet]

usurp [usurped, usurping, usurps]▼(seize power)
verb
[UK: juː.ˈzɜːp] [US: ˌjuː.ˈsɝːp]