regular
1 common, commonplace, customary, daily, everyday, habitual, normal, ordinary, routine, typical, unvarying, usual
2 consistent, constant, established, even, fixed, ordered, periodic, rhythmic, set, stated, steady, systematic, uniform
3 dependable, efficient, formal, methodical, orderly, standardized, steady, systematic
4 balanced, even, flat, level, smooth, straight, symmetrical, uniform
5 approved, bona fide, classic, correct, established, formal, official, orthodox, prevailing, proper, sanctioned, standard, time-honoured, traditional
Antonyms
1 abnormal, exceptional, infrequent, irregular, occasional, rare, uncommon, unconventional, unusual
2 erratic, inconsistent, inconstant, irregular, varied
3 disorderly, unmethodical
4 erratic, irregular, uneven