Ouster

['aʊstə] or ['aʊstɚ]

(noun.) the act of ejecting someone or forcing them out.

(noun.) a wrongful dispossession.

(noun.) a person who ousts or supplants someone else.

Checker: Mattie--From WordNet

(n.) A putting out of possession; dispossession; ejection; disseizin.

Typist: Nelly