oust

The story

1. Latin · derived fromobstare“to remove”
2. Old French · derived fromoster
3. Anglo-Norman · derived fromouster
4. English todayoust

From Anglo-Norman ouster, oustier, from Old French oster (modern French ôter), from post-classical Latin obstare (“to remove”), classical obstāre (“to obstruct, stand in the way of”). Not related to out.