decay
https://gyazo.com/7c48837c29326bc20a24bd65bea7d9d3
e.g. a decaying mansion
DECOMPOSE stresses a breaking down by chemical change and when applied to organic matter a corruption. e.g. the strong odor of decomposing vegetation
ROT is a close synonym of DECOMPOSE and often connotes foulness. e.g. fruit was left to rot in warehouses
PUTREFY implies the rotting of animal matter and offensiveness to sight and smell. e.g. corpses putrefying on the battlefield
SPOIL applies chiefly to the decomposition of foods. e.g. keep the ham from spoiling
verb no object
〈物が〉(次第に)腐る, 腐敗する; 〈歯が〉虫歯になる(→ rot); 〈物が〉腐って «…に» なる «into» e.g. (as adjective decaying) : the odor of decaying fish e.g. (as adjective decayed) : a decayed cabbage leaf. 〈物〉を腐敗させる; …を衰えさせる
e.g. the fungus will decay soft timber.
〈建造物などが〉(徐々に)老朽化する (!しばしば進行形で)
e.g. urban neighborhoods decay when elevated freeways replace surface roads.
〈社会・制度などが〉腐敗する, 荒廃する; 〈健康・富・勢力・美などが〉衰える, 衰退する; 堕落する (!しばしば進行形で) .
e.g. the moral authority of the party was decaying.
〘物理〙 〈放射性物質が〉崩壊する
e.g. the trapped radiocarbon begins to decay at a known rate.
〈物理量が〉減衰する
e.g. the time taken for the current to decay to zero.
noun
腐敗, 腐食, 腐ること
e.g. hardwood is more resistant to decay than softwood
e.g. bacterial decay.
虫歯(の部分)
e.g. fluoride heals small spots of decay.
(建造物などの)老朽化, 荒廃
e.g. the old barn rapidly fell into decay.
(精神・健康・富・勢いなどの)衰退, 衰え; 荒廃
e.g. preachers warning of moral decay.
〘物理〙 (放射性物質の)崩壊
e.g. the gas radon is produced by the decay of uranium in rocks and soil.
(物理量の)減衰
e.g. the decay of electrical fields in the electromagnets.
ORIGIN