adjective:happening or done frequently and at uniform intervals
He goes for a regular check-up every six months.
adjective:following a fixed or standard pattern
The tiles were arranged in a regular pattern on the floor.
adjective:conforming to an accepted standard or normal type
She ordered a regular coffee instead of a large one.
noun:used to describe a person who often visits or takes part in a particular place or activity
He’s a regular at the local cafe.