The antonyms for the word "enheartens" would be words that describe the opposite, such as discourages, disheartens, dispirits, depresses, demoralizes, saddens, weakens. These antonyms describe feelings of sadness, despair, and defeat. When someone is discouraged or disheartened, they feel a sense of hopelessness and loss of motivation. Dispirited or demoralized individuals lack enthusiasm, while weakened people have lost strength. All these antonyms don't provide any positive effect, rather they carry negative connotations. While the word "enheartens" is used to instill courage and confidence, its antonyms are used to describe the state of mind where someone feels a lack of hope and motivation.