The process of something breaking down or rotting over time.
The old house showed signs of decay with crumbling walls and a sagging roof.
古い家は崩れ落ちる壁と垂れ下がる屋根で腐朽の兆候を示していた。
The gradual decline or collapse of a society, system, or institution.
The city faced social decay as crime rates rose and community bonds weakened.
犯罪率が上昇し、地域の絆が弱まる中、都市は社会的衰退に直面した。
The natural process where radioactive materials change and release energy.
Scientists measure the decay of radioactive elements to determine their age.
科学者は放射性元素の崩壊を測定してその年代を決定する。
To rot or break down over time.
Fruit left outside will quickly decay in the heat.
外に置かれた果物は熱ですぐに腐敗する。
To become worse in condition, especially buildings or areas.
Without maintenance, the neighborhood began to decay with abandoned homes and overgrown yards.
メンテナンスがなければ、地域は放棄された家屋や雑草が生い茂る庭で衰退し始めた。
To lose strength, quality, or influence over time.
Public trust in the government started to decay after the scandal.
スキャンダルの後、政府に対する国民の信頼は衰え始めた。