[oust] vt [ME, fr. AF ouster, fr. OF oster, fr. LL obstare to ward off, fr. L, to stand in the way, fr. ob- in the way + stare to stand--more at ob-, stand] (15c) 1 a: to remove from or dispossess of property or position by legal action, by force, or by the compulsion of necessity b: to take away (as a right or authority): bar, remove
2: to take the place of: supplant syn see eject