Collocations for regular - adj.

be, seem
become

very
fairly, pretty (esp. AmE), quite, reasonably
a pretty regular customer

increasingly
She enjoyed his increasingly regular visits.

at regular intervals
His blood pressures was taken at regular intervals.

on a regular basis
The paintings are changed on a regular basis.

be

highly, very
highly regular patterns

perfectly
Her face was perfectly regular.

fairly

be, seem
Everything seemed regular.

fairly, pretty
He's a pretty regular guy.

perfectly
She comes from a perfectly regular middle-class family.

Regular is used with these nouns:
appearance, army, assessment, attendance, basis, beat, bedtime, breathing, briefing, bus, check, check-up, chore, client, clientele, clothes, column, communication, contact, contributor, correspondence, customer, cycle, drinker, duty, employment, event, exercise, exposure, fare, fashion, feature, feedback, fix, fixture, flight, folk, follow-up, force, gasoline, grid, guest, guy, habit, haunt, hour, income, injection, inspection, intake, job, mail, maintenance, medical, medication, meeting, member, menu, military, milk, monitoring, occurrence, participant, pattern, payment, physiotherapy, premium, programme, rate, reader, repayment, report, review, rhythm, routine, saver, schedule, season, service, session, shape, shopper, sight, smoker, soda, soldier, subscriber, sum, summit, supervision, supply, surveillance, survey, swim, trip, troops, update, use, user, verb, viewer, visit, visitor, wage, winner, work, workout, worship