We found 14 dictionaries that define the word lose heart:

General (10 matching dictionaries)

1. lose heart: Merriam-Webster
2. lose heart: Oxford Learner's Dictionaries
3. lose heart: Collins English Dictionary
4. lose heart: Cambridge Advanced Learner's Dictionary
5. lose heart: Wiktionary
6. lose heart: Dictionary.com
7. Lose Heart: Dictionary of Phrase and Fable (1898)
8. lose heart: TheFreeDictionary.com

Business (1 matching dictionary)

9. lose heart: Legal dictionary

Computing (1 matching dictionary)

10. lose heart: Encyclopedia

Medicine (1 matching dictionary)

11. lose heart: Medical dictionary

Miscellaneous (1 matching dictionary)

12. lose heart: Idioms

Definitions from Wiktionary (lose heart) ▸ verb:  To despair; to experience reduced morale. Similar: unheart, dishearten, disheart, despond, despair, faint, demoralize, dispirit, amate, sink, more... Opposite: encourage, inspire, motivate, hearten Phrases: to lose heart, lose heart to, lose your heart, to lose one's heart, to lose ones heart, more... ▸ Words similar to lose heart ▸ Usage examples for lose heart ▸ Idioms related to lose heart ▸ Wikipedia articles (New!) ▸ Words that often appear near lose heart ▸ Rhymes of lose heart ▸ Invented words related to lose heart