ichidan verb, transitive verb
let spoil; leave to rot; cause to rot; corrode
Used when someone or something causes food, materials, or a situation to rot or deteriorate. Often implies neglect or a corrosive effect.
See also: 腐らす
冷蔵庫に入れないと、肉を腐らせてしまうよ。
If you don't put it in the fridge, you'll let the meat spoil.
湿気が金属を腐らせる。
Moisture corrodes metal.
ichidan verb, transitive verb
Figurative use: to dampen someone's spirits or enthusiasm. Often used in the expression 気持ちを腐らせる.
See also: 腐らす
彼の一言が私のやる気を腐らせた。
His single remark discouraged me.