rot
US /rɑːt/
UK /rɑːt/

1.
2.
(of a person or society) gradually decline in quality or degenerate.
:
•
The whole system is starting to rot from within.
•
He felt his mind rot away in idleness.
1.
decay; decomposition.
:
•
The smell of rot filled the air.
•
There was a lot of wood rot in the old house.
2.
nonsense; rubbish.
:
•
Don't talk such rot!
•
His arguments were pure rot.