What does the word uttermost mean?

Usage examples for uttermost

  1. So Sir Damas and he were agreed that he should fight for him upon this covenant, that all other knights should be delivered; and unto that was Sir Damas sworn unto Arthur, and also to do the battle to the uttermost. – Le Morte D'Arthur, Volume I (of II) King Arthur and of his Noble Knights of the Round Table by Thomas Malory
  2. Then slowly and with the uttermost caution once more they crept down the hill. – Jess by H. Rider Haggard
  3. When the great bush was stripped to the uttermost as it seemed, Margaret stood back a little distance to view it the better, and see that not one nut had escaped. – Greene Ferne Farm by Richard Jefferies
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