To weigh more than something else or more than is wanted or needed.
It can make people think of too much of something, like too much food or too much worry.
Examples:
The elephant overweighed the mouse.
I overweighed my suitcase and had to take some things out.
She overweighed the importance of the test.
The cake overweighed the plate and broke it!
His love for pizza overweighed his love for anything else.
The sadness overweighed the happiness in the room.