A stupor is a state where someone is not able to think well or move well, often because they are very tired or sick.
A stupor is a bad thing. It can make people feel worried or sad.
Examples:
He was in a stupor after staying up all night.
The sick dog lay in a stupor.
She fell into a deep stupor after the long journey.
The cat looked at me in a stupor.
After running for hours, he fell into a stupor.
The old man's face was in a stupor as he tried to stand up.