lose heart(redirected from lost heart)
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To feel demoralized or pessimistic about something; to lose hope. Don't lose heart—this is just a minor setback.
Fig. to lose one's courage or confidence. Now, don't lose heart. Keep trying. What a disappointment! It's enough to make one 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] Also see lose one's heart to.
COMMON If you lose heart, you start to feel that you will not be able to succeed with something. Note: The heart is traditionally regarded as the centre of the emotions. It's all too easy to lose heart when you've had a couple of failures. He appealed to his countrymen not to lose heart.