All 4 Uses

vanquish
in
Harry Potter (#7) and the Deathly Hallows
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Hermione put the vanquished Horcrux into the beaded bag, then climbed back into her bed and settled down without another word.†
Chpt 19 *

vanquished = completely defeated
Vanquisher.†
Chpt 21

vanquisher = someone who completely defeats another
But Harry's imagination was racing ahead, far beyond Ron and Hermione's...Three objects, or Hallows, which, if united, will make the possessor master of Death...Master...Conqueror...Vanquisher...The last enemy that shall be destroyed is death...And he saw himself, possessor of the Hallows, facing Voldemort, whose Horcruxes were no match...Neither can live while the other survives...Was this the answer?†
Chpt 22
He squinted again for a single second and saw the open doorway filling with people, as the survivors of the battle came out onto the front steps to face their vanquishers and see the truth of Harry's death for themselves.†
Chpt 36

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