プログレッシブ和英中辞典(第３版)の解説
おとろえる【衰える】
become weaker; decline
- 彼の健康がめっきり衰えた
His health has declined [failed] noticeably. - 年をとって記憶力［視力］が衰えてきた
My memory [eyesight] is failing with age. - 彼は気力が衰えた
He has lost heart. - 人気が衰えてきた
He is losing popularity.／His popularity is waning. - 火勢が衰えてきたらしい
The fury of the flames seems to be 「dying down [slackening off]. - 商売が衰えた
My business dwindled [fell off／slumped].