mussolini
n. countable C2 Proficiency US //ˌmusoʊˈɫini// mus·soli·ni
n. a person who acts like a bossy or strict leader in a way that seems a bit much. It comes from the name of an old Italian dictator, but people use it today to tease someone who is being too controlling.
n. a person who exhibits authoritarian, domineering, or dictatorial behavior in a specific context. Often used figuratively or humorously to describe someone exercising excessive control over minor matters.
Our office manager is a bit of a Mussolini about the coffee machine.
He acted like a total Mussolini during the group project, refusing to let anyone else choose the font or layout.
Usage
When used as a common noun to describe a personality type, it is often preceded by 'a' or 'a bit of a'.