use-icon

HOW TO USE THE DICTIONARY

Learn what the dictionary tells you about words.

Get Started Now!

Some compound words (like bus rapid transit, dog whistle, or identity theft) don’t appear on the drop-down list when you enter them into the search window. If a compound term doesn’t appear in the drop-down list, try entering the term into the search window and then hit the search button (instead of the “enter” key). Alternatively, begin searches for compound terms with a quotation mark.

use-icon

THE USAGE PANEL

The Usage Panel is a group of nearly 200 prominent scholars, creative writers, journalists, diplomats, and others in occupations requiring mastery of language. The Panelists are surveyed annually to gauge the acceptability of particular usages and grammatical constructions.

The Panelists

puzzle-icon

NEED HELP SOLVING A CROSSWORD PUZZLE?

Go to our Crossword Puzzle Solver and type in the letters that you know, and the Solver will produce a list of possible solutions.

open-icon

INTERESTED IN DICTIONARIES?

Check out the Dictionary Society of North America at http://www.dictionarysociety.com

open-icon

AMERICAN HERITAGE DICTIONARY APP

The new American Heritage Dictionary app is now available for iOS and Android.

scroll-icon

INDO-EUROPEAN & SEMITIC ROOTS APPENDICES

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

open-icon

OPEN DICTIONARY PROJECT

Share your ideas for new words and new meanings of old words!

Start Sharing Now!

100-words-icon

See word lists from the best-selling 100 Words Series!

Find out more!

reg·u·lar (rĕgyə-lər)
Share:
adj.
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.
6. Having bowel movements or menstrual periods with normal 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.
n.
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; see reg- in the Appendix of Indo-European roots.]

regu·lari·ty (-lărĭ-tē) n.
regu·lar·ly adv.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2017 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 

This website is best viewed in Chrome, Firefox, Microsoft Edge, or Safari. Some characters in pronunciations and etymologies cannot be displayed properly in Internet Explorer.