What is the meaning of to be on ball?

The phrase "on the ball" means to be aware, alert, and informed. It is often used to describe someone who is quick to react to a situation or who is good at making decisions. The phrase can also be used to describe a person who is well-informed about a particular topic or situation.

The phrase "on the ball" is thought to have originated in the early 1800s. It was originally used to describe a baseball player who was good at catching the ball. Over time, the phrase came to be used more figuratively to describe someone who is quick-witted and intelligent.

The phrase "on the ball" is a positive term. It is often used to describe someone who is admired or respected for their intelligence or abilities.