mumpish in a sentence

Definition

Mumpish: characterized by a sullen or moody demeanor, often displaying sulkiness or a lack of enthusiasm.

His mumpish demeanor at the party made it difficult for anyone to engage him in conversation.
After losing the game, he sat in a mumpish silence, refusing to acknowledge his friends.
Despite the cheerful atmosphere, her mumpish attitude cast a shadow over the gathering.
The child became mumpish when he was told it was time to leave the playground.
Even the most exciting news couldn't lift her mumpish spirits that day.