To unseat means to remove or overthrow someone from a position of power or authority. This could happen through various means, such as a vote of no confidence, a popular uprising, or a coup d'etat.

In a political context, unseating usually refers to the removal of an elected official from office. This could happen through an impeachment process, a recall election, or simply by losing a subsequent election. Unseating can also refer to the removal of a monarch or other non-elected leader.

In a more general sense, unseating can refer to the removal of anyone from a position of power or authority, such as a CEO being ousted by the board of directors, or a coach being fired by a sports team.

Overall, unseating is a significant action that can have far-reaching consequences for both the individual being removed and the organization or society they were leading.