받은 은혜나 도움에 대해 고마움을 느끼지 않거나 표현하지 않는.
Not feeling or showing gratitude for favors or benefits received.
예문:
"He felt his children were ungrateful for the sacrifices he had made for their education."
"An ungrateful guest rarely receives a second invitation to the manor."
노력에 비해 보람이 없거나 불쾌하고 힘든.
Unpleasant or thankless, especially of a task that provides no reward or recognition despite the effort.
예문:
"The politician faced the ungrateful job of announcing the necessary budget cuts."
"Cleaning the gutters is an ungrateful chore that needs to be done every autumn."