Feeling regret or sorrow for something that happened or something that was done.
Rueing is a sad feeling. It means feeling sorry for something that happened.
Examples:
She is rueing her decision.
I am rueing the mistake I made.
He is rueing his actions.
They are rueing not listening to the advice.
I am rueing the day I didn't go to the party.
We will be rueing this for a long time.