Causing to lose heart; making despondent or gloomy; scare; discourage.(adjective)
Present participle of dishearten.(verb)
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Use "disheartening" in a sentence
"Equally disheartening is the fact that the Iranian authorities are repressing women in a far more dangerous and direct way than passing draconian "family protection" laws: dozens, if not hundreds of women's rights activists have been personally targeted for arrest or extralegal attacks."
"What I find disheartening is the 'mean spirited nature' of so many comments on this and other sites."
"What's really disheartening is that the Times feels the need to explain to their readers why their decision to cancel Ann Coulter isn't evidence of some grand liberal bias or conspiracy on their part."