1 routine, ordinary, common, everyday, customary, accustomed, wonted, commonplace, normal, usual, traditional, time-honoured, conventional, typical, habitual, natural, familiar, standard, predictable, scheduled, fixed, unvarying, invariable, methodical:
The attack occurred while Eric was taking his regular evening stroll
2 scheduled, routine, systematic, ordered, steady, consistent, rhythmic(al), automatic, uniform, periodic, cyclic(al); hourly, daily, weekly, hebdomadal, semi-weekly, biweekly, fortnightly, semi-monthly, monthly, bimonthly, seasonal, quarterly, semi-annual, annual:
The patrol made their regular rounds, as usual. The printers' strike might delay regular publication of the magazine.
3 symmetrical, uniform, even, even-sided, equal-sided, equilateral, equal-angled, equiangular; harmonious:
Any six-sided plane figure is a hexagon, but if it has six equal angles and six sides equal in length, it is a regular hexagon.
4 undistorted, even, well-proportioned, proportional, symmetrical, classic:
He was classically good-looking, with regular features.
5 even, smooth, level, straight, uniform, uninterrupted, unvarying, continuous, flat, plane, plumb:
The surface of the wing is regular except for the spoilers.
6 dependable, methodical, (well-)regulated, (well-)ordered, orderly; proper, correct, legal, official, bona fide, legitimate, established, recognized, orthodox, approved, Colloq kosher, OK or okay:
Everything about the council election was entirely regular.
7 usual, expected, normal, habitual, accustomed, familiar:
Our regular doctor was on holiday, and we had to see a locum.
8 acceptable, accepted, estimable, fine, good, likeable, popular, pleasant:
We all consider Bob to be a regular fellow and a friend.
9 complete, utter, thoroughgoing, unmitigated, unalloyed, unqualified, consummate, perfect, thorough, absolute, well-known, acknowledged:
The man is a regular dunce when it comes to repairing cars.
10 permanent, career:
She's in the regular navy.
11 conventional, usual, common, conformable, ordinary, systematic, Colloq US ruly:
Regular English verbs form their past by the addition of -d or -ed to the infinitive.
12 fixture, habitué, (steady) customer, patron, client, frequenter:
Jan has been a regular at the Star and Garter pub for years.