DICT.TW Dictionary Taiwan

 un·seat /-ˈsit/
 (v.)使從馬上摔下;使失資格;去職

 Un·seat v. t.
 1. To throw from one's seat; to deprive of a seat.
 2. Specifically, to deprive of the right to sit in a legislative body, as for fraud in election.
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 unseat
      v 1: remove from political office; "The Republicans are trying to
           unseat the liberal Democrat"
      2: dislodge from one's seat, as from a horse