rancid
🇺🇸
/ˈrænsɪd/
🇬🇧
/ˈrænsɪd/
having an unpleasant smell or taste, usually because of old or spoiled food
The old butter in the fridge had gone rancid, so it had to be thrown away.
冷蔵庫の古いバターが腐ってしまったので、捨ててしまわなければならなかった。