Don

Noun / UK Slang

Don describes someone with a strong sense of self-importance, often seen as a leader or someone highly respected in their social circle or field.

Example: “He walks around like he’s the don of the group.”
Means: “He acts like he’s the most important or respected person in the group.”

Example: “You think you’re the don because of your new car?”
Means: “You think you’re important because of your new car?”