a person who will not share something he does not use or need He's a dog in the manger about his office space. He doesn't use it, but he won't let us have it.
dog in the manger|dog|manger
n. phr. A person who is unwilling to let another use what he himself has no use for. Although Valerie lives alone in that big house, she is like a dog in the manger when it comes to letting someone sharing it with her.
An mange idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with mange, allowing users to choose the best word for their specific context.
Dizionario di parole simili, diverso tenore, sinonimi, di invocazione per Idioma mange