Definition of unseat verb from the Oxford Advanced American Dictionary

     

    unseat

     verb
    verb
    NAmE//ʌnˈsit//
     
    Verb Forms present simple I / you / we / they unseat
     
    he / she / it unseats
     
    past simple unseated
     
    -ing form unseating
     
     
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  1. 1unseat somebody to remove someone from a position of power
  2. 2unseat somebody to make someone fall off a horse or bicycle The horse unseated its rider at the first fence.
See the Oxford Advanced Learner's Dictionary entry: unseat