usual; normal; customary

to put something in its regular place.

evenly or uniformly arranged; symmetrical

regular teeth.

characterized by fixed principle, uniform procedure, etc.

regular income.

recurring at fixed times; periodic

regular bus departures; regular meals.

rhythmical

regular breathing.

occurring with normal frequency, as menses or bowel movements.

having regular menses or bowel movements.

adhering to a rule or procedure; methodical

regular habits; to be regular in one's diet.

observing fixed times or habits; habitual

a regular customer.

orderly; well-ordered

a regular life.

conforming to some accepted rule, discipline, etc.

carried out in accordance with an accepted principle or rule; formally correct

a regular session of the court.

qualified to engage in an occupation or profession; legitimate; proper

I suspected the man wasn't a regular doctor.

Informal .

real or genuine; down-to-earth; decent

a regular guy.

absolute; thoroughgoing

a regular rascal.

(of a flower) having the members of each of its floral circles or whorls alike in form and size.

Grammar . conforming to the most prevalent pattern of formation, inflection, construction, etc.

Mathematics .

governed by one law throughout.

(of a polygon) having all sides and angles equal.

(of a polyhedron) having all faces congruent regular polygons, and all solid angles congruent.

(of a topological space) having the property that, corresponding to each point and a closed set not containing the point, there are two disjoint open sets, one containing the point, the other containing the closed set.

(of a function of a complex variable) analytic ( def. 5a ) .

Military . noting or belonging to the permanently organized, or standing, army of a state.

International Law . noting soldiers recognized as legitimate combatants in warfare.

Ecclesiastical . subject to a religious rule, or belonging to a religious or monastic order ( opposed to secular )

regular clergy.

U.S. Politics . of, pertaining to, or selected by the recognized agents of a political party

the regular ticket.

(of coffee) containing an average amount of milk or cream.

a long-standing or habitual customer or client

The restaurant can always find tables for its regulars.

Ecclesiastical . a member of a duly constituted religious order under a rule.

Military . a professional soldier.

U.S. Politics . a party member who faithfully stands by his or her party.

a size of garment designed for men of average build.

a garment, as a suit or overcoat, in this size.

an athlete who plays in most of the games, usually from the start.

adjective

abnormal , anomalous , eccentric , extraordinary , irregular , rare , uncommon , unusual , changing , disorderly , imbalanced , inconsistent , infrequent , unsteady , variable

adjective

approved , bona fide , classic , commonplace , correct , customary , daily , established , everyday , formal , general , habitual , lawful , legitimate , natural , official , ordinary , orthodox , prevailing , prevalent , proper , routine , run-of-the-mill * , sanctioned , standard , time-honored , traditional , typic , typical , unexceptional , unvarying , usual , accordant , alternating , arranged , automatic , classified , congruous , consonant , constant , cyclic , dependable , efficient , even , exact , expected , fixed , flat , harmonious , in order , invariable , level , measured , mechanical , methodical , momentary , ordered , organized , patterned , periodic , precise , probable , punctual , rational , recurrent , regulated , rhythmic , serial , set , smooth , standardized , stated , steady , straight , successive , symmetrical , systematic , uniform , accustomed , wonted , familiar , frequent , widespread , balanced , proportional , proportionate , symmetric , perfect , methodic , orderly , systematical , changeless , equable , invariant , same , unchanging , (colloq.) unmitigated , authorized , common , complete , consistent , continual , conventional , cyclical , faithful , genuine , metronomic , monolithic , normal , out-and-out , predictable , statutory , synchronous , systematic: steady , thorough , utter