Antonyms of verb dishearten

1 sense of dishearten

Sense 1
dishearten, put off -- (take away the enthusiasm of)
       Antonym of hearten (Sense 1)
      => cheer, hearten, recreate, embolden -- (give encouragement to)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb dishearten

1 sense of dishearten

Sense 1
dishearten, put off -- (take away the enthusiasm of)
       => discourage -- (deprive of courage or hope; take away hope from; cause to feel discouraged)

Antonyms of adj disheartening

1 sense of disheartening

Sense 1
demoralizing, demoralising, disheartening, dispiriting -- (destructive of morale and self-reliance)

INDIRECT (VIA discouraging) -> encouraging -- (giving courage or confidence or hope; "encouraging advances in medical research")

Similarity of adj disheartening

1 sense of disheartening

Sense 1
demoralizing, demoralising, disheartening, dispiriting -- (destructive of morale and self-reliance)
       => discouraging (vs. encouraging) -- (depriving of confidence or hope or enthusiasm and hence often deterring action; "where never is heard a discouraging word")