1. Customary, usual, or normal: the train's regular schedule.
2. Orderly, even, or symmetrical: regular teeth.
3. In conformity with a fixed procedure, principle, or discipline.
4. Well-ordered; methodical: regular habits.
5. Occurring at fixed intervals; periodic: regular payments. See synonyms at normal.
6. a. Occurring with normal or healthy frequency. b. Having bowel movements or menstrual periods with normal or healthy frequency.
7. Not varying; constant.
8. Formally correct; proper.
9. Having the required qualifications for an occupation: not a regular lawyer.
10. Informal. Complete; thorough: a regular scoundrel.
11. Informal. Good; nice: a regular guy.
12. Botany. Having symmetrically arranged parts of similar size and shape: regular flowers.
13. Grammar. Conforming to the usual pattern of inflection, derivation, or word formation.
14. Ecclesiastical. Belonging to a religious order and bound by its rules: the regular clergy.
15. Mathematics. a. Having equal sides and equal angles. Used of polygons. b. Having faces that are congruent regular polygons and congruent polyhedral angles. Used of polyhedrons.
16. Belonging to or constituting the permanent army of a nation.
1. Ecclesiastical. A member of the clergy or of a religious order.
2. A soldier belonging to a regular army.
3. A dependable, loyal person: one of the party regulars.
4. A clothing size designed for persons of average height.
5. A habitual customer.
[Middle English reguler, living under religious rule, from Old French, from Late Latin rēgulāris, according to rule, from Latin rēgula, rod, rule.]