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!

con·form (kən-fôrm)
Share:
v. con·formed, con·form·ing, con·forms
v.intr.
1.
a. To be or act in accord with a set of standards, expectations, or specifications: a computer that conforms with the manufacturer's advertising claims; students learning to conform to school safety rules. See Synonyms at correspond.
b. To act, often unquestioningly, in accordance with traditional customs or prevailing standards: "Our table manners ... change from time to time, but the changes are not reasoned out; we merely notice and conform" (Mark Twain).
2. To be similar in form or pattern: a windy road that conforms to the coastline; a shirt that conforms to different body shapes.
v.tr.
To bring into accord or agreement; cause to correspond or comply: "a woman who has conformed herself to the male-designed image of virtuous widowhood so that she can live in peace" (Jennifer Panek). See Synonyms at adapt.

[Middle English conformen, from Old French conformer, from Latin cōnfōrmāre, to shape after : com-, com- + fōrmāre, to shape (from fōrma, shape).]

con·former n.

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.