Dictionary / Vocabulary / 衰える
おとろえる
to become weak; to decline; to wear; to abate
JLPT N1 common word
薪が足りず、はやくも火勢が衰えはじめた暖炉。
The fireplace, lacking firewood, flames already starting to lose their vigour.
貿易の活動は最近衰えてきている。
The activity of foreign trade has been declining of late.
文明が進むにつれて、詩は殆ど必然的に衰える。
As civilization advances, poetry almost necessarily declines.