When something is done as part of a routine or on a schedule, the activity is regular. This adjective is applied to many situations:
Our school follows a regular schedule every day.
Regular maintenance of your car will keep it running properly.
Joe makes regular visits to the doctor every year.
We have a regular place to meet every day.
He seems like a regular guy. (a regular guy = an average person, a good person)
The word "regularly" is a popular adverb. It’s four syllables (four sounds), and it’s difficult for some people to pronounce because of the"r" and "l" sounds:
regularly
This class meets regularly on Mondays and Wednesdays.
We regularly go to the beach on the weekends.
Joe visits the doctor regularly.
Nadia regularly does her grocery shopping at Jewel, but today she’s at Dominick’s.
They regularly eat dinner at 6:00 every evening.
The opposite of the word "regular" is "irregular."
Gloria has an irregular schedule. It changes from week to week.
This shirt was marked down to five dollars because it’s irregular. (irregular = defective merchandise)