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The Best Internet Slang

lose heart

Become discouraged, as in The rescuers worked hard for the first few hours, but then they lost heart. This term uses heart in the sense of “courage” or “spirit.” [ Mid-1800s ]
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Examples from the Web for lose heart
Historical Examples
  • Do not lose heart, replied Socrates, and the day may come when you will understand.

    Phaedo Plato
  • Do not lose heart, Philip; he cannot last forever; and this week how ill he has been!

    Molly Bawn Margaret Wolfe Hamilton
  • But don't you lose heart, Jim, for I'm sure this isn't the end of our story, by any means.

  • Do remember if you lose heart about your work, that none of it is lost.

    Out of the Deep Charles Kingsley
  • At twenty yards they slowed down and stopped, seeming to lose heart.

  • But though Julien was unable to fight with so big an opponent, he did not lose heart.

  • When matters had come to this pass, I began for the first time to lose heart.

    Peter Biddulph W.H.G. Kingston
  • In spite of this, neither officers nor men appeared to lose heart.

    Paddy Finn W. H. G. Kingston
  • We must not lose heart, or it will be the worse both for ourselves and for those whom we love.

    Character Samuel Smiles
  • A young soldier must not lose heart because he finds he is a prisoner.

    The Young Castellan George Manville Fenn

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