0 past simple and past participle of oust
1 to force someone to leave a position of power, job, place, or competition:
They offered voters a massive inducement to oust the president by announcing that sanctions would be lifted if there was 'democratic change'.
Traditional farming patterns have been ousted by modern methods.
It proved impossible to oust him from power.
But directors who liked contemporary plays and wanted to stage them from the playwright's point of view were ousted from the big boys' club.
Those who refused would be robbed or ousted.
The higher frequency of help is not due to the fact that it has ousted synonyms such as support or aid.