Do it now.
Meaning: This means to tell someone to start doing something right away. It's like saying, Please start performing the action or carrying out the task immediately.
Choice of Words: Do means to perform an action or carry out a task. It refers to a specific action or task that needs to be done. Now means at this moment, without delay. When you put them together, "Do it now" is a simple instruction asking someone to start doing something immediately.
Alternative Expressions
Related Expressions