downhearted
adjective uk/ˌdaʊnˈhɑː.tɪd/ us/ˌdaʊnˈhɑːr.t̬ɪd/
（尤指因失望或失败而）灰心的，丧气的，气馁的
unhappy and having no hope, especially because of a disappointment or failure
After hearing the news of the defeat, she told supporters not to be downhearted. 听到失败的消息后，她告诉支持者们不要灰心。
Synonyms: blue depresseddispiriteddown downcastgloomylow low-spirited