Smeddums means energy, spirit, or determination.
Having smeddums is usually seen as a good thing because it means you have a lot of energy and determination.
Examples:
She has a lot of smeddums when she plays soccer.
You need smeddums to finish a big puzzle.
His smeddums help him run really fast.
The little dog has a lot of smeddums when it chases its tail.
I wish I had as much smeddums as her!
The superhero has so much smeddums, he can lift a car!