1. to cause someone to lose hope, enthusiasm, or confidence; to discourage
Usage: third person singular present tense of ‘dishearten’

Examples

• The constant rejection disheartens young writers.
• Bad weather often disheartens outdoor enthusiasts.
• The team’s poor performance disheartens their loyal fans.
• Nothing disheartens her more than seeing children go hungry.
• The lack of progress disheartens the volunteers.
• His negative attitude disheartens everyone around him.