oust
/aust; aʊst/ v[Tn, Tn.pr]
~ sb (from sth) (fml 文) remove sb (from a position, job, etc) sometimes in order to take his place 免某人（职）; 罢黜; 剥夺; 取代
oust a rival from office 把竞争者从其职位上挤走
He was ousted from his position as chairman. 他的主席职位被罢免了.