To mean business means to be serious and determined about what you are saying or doing. When someone means business, they are not joking and expect others to take them seriously.
The phrase has been used in English since the 1800s. It comes from the idea that when someone is dealing with business matters, they are focused and intent on getting results.
The phrase has been used in English since the 1800s. It comes from the idea that when someone is dealing with business matters, they are focused and intent on getting results.
When the coach blew the whistle and started the tough training drills, everyone knew she meant business.