"Regular" can have several meanings depending on the context:
1. Adjective:
Having a fixed or orderly pattern or sequence; predictable.
Occurring at regular intervals; periodic.
Conforming to rules or standards; proper.
Average or ordinary; not exceptional.
2. Noun:
A person who is employed on a regular basis, as opposed to a casual or part-time worker.
A person who is reliable and dependable.
3. Verb:
To make or become regular or orderly.
To make or become proper or correct.
For example:
The train runs on a regular schedule.
She is a regular at the gym.
The meeting was regular and productive.
I need to regularize my immigration status.
You should regular your diet to improve your health.