Driven out (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">driven out</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ousted that I've seen before include "Removed from office (6)" , "Put or thrust out" , "Put forcibly out of office" , "Forcibly ejected from office or position" , "Booted out of office" .)
(Other definitions for displaced that I've seen before include "Forced to leave home" , "Moved from its proper position" , "Supplanted" .)