Rot means when something old or dead breaks down and becomes soft or bad. This is common in food and plants when they are left too long.
The fruit shows signs of rot.
Wood left outside can get rot.
Rot as a verb means when food or plants go bad and get soft or ugly. It happens when they stay too long or in wet places.
Fruits rot if not eaten soon.
Leaves rot in wet weather.
Rot can mean a bad change in a place, group, or system. It means things are getting worse, often in a moral or social way.
The city was in a state of rot.
Corruption causes rot in society.
Rot can be used to say that something is not true or is foolish. It means nonsense or rubbish in informal talk.
That story is all rot.
Don't listen to his rot.
Rot is an old word for measuring land area, about 1,000 square meters or a quarter of an acre. It is not used much today.
He owns ten rots of farmland.
The field measures five rots wide.
Rot can be added after words to show something is gradually getting worse or bad inside, like 'brain rot' means bad thinking or 'tooth rot' means tooth decay.
TV can cause brain rot.
Too much sugar leads to tooth rot.
In computers, rot means when software or data slowly becomes bad or stops working well over time. This can happen to old files or programs.
Old files may suffer bit rot.
Software rot causes system failure.