down ‧ heart ‧ ed /ˌdaʊnˈhɑːtəd◂, ˌdaʊnˈhɑːtɪd◂ $ -ɑːr-/ BrE AmE adjective
feeling sad and disappointed, especially because you have tried to achieve something but have failed:
When no replies came, I began to feel downhearted.
down ‧ heart ‧ ed /ˌdaʊnˈhɑːtəd◂, ˌdaʊnˈhɑːtɪd◂ $ -ɑːr-/ BrE AmE adjective
feeling sad and disappointed, especially because you have tried to achieve something but have failed:
When no replies came, I began to feel downhearted.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012