use-icon

HOW TO USE THE DICTIONARY

To look up an entry in The American Heritage Dictionary of the English Language, use the search window above. For best results, after typing in the word, click on the “Search” button instead of using the “enter” key.

Some compound words (like bus rapid transit, dog whistle, or identity theft) don’t appear on the drop-down list when you type them in the search bar. For best results with compound words, place a quotation mark before the compound word in the search window.

guide to the dictionary

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. Annual surveys have gauged the acceptability of particular usages and grammatical constructions.

The Panelists

open-icon

AMERICAN HERITAGE DICTIONARY APP

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

scroll-icon

THE AMERICAN HERITAGE DICTIONARY BLOG

The articles in our blog examine new words, revised definitions, interesting images from the fifth edition, discussions of usage, and more.

100-words-icon

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

Find out more!

open-icon

INTERESTED IN DICTIONARIES?

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

ad hom·i·nem (hŏmə-nĕm, -nəm)
Share:
adj.
1. Attacking a person's character or motivations rather than a position or argument: The candidates agreed to focus on the issues rather than making ad hominem attacks against each other.
2. Appealing to the emotions rather than to logic or reason.

[Latin : ad, to + hominem, accusative of homō, person.]

ad homi·nem adv.

Usage Note: Those readers who have studied Latin will know that the preposition ad means "to" or "toward" and that the hominem of ad hominem is an inflected form of the noun homo ("person"), making the literal meaning of the phrase "toward the person." But toward which person? Though ad hominem is usually used nowadays to describe a personal attack, the homo of ad hominem was originally the audience to whom an argument was addressed, not the opponent at whom a personal attack is directed. The phrase denoted an argument designed to appeal to the listener's emotions rather than to reason, as in the sentence That candidate's evocation of pity for the small farmer struggling to maintain his property is a purely ad hominem argument for reducing inheritance taxes. This usage had already begun to wane by the 1990s: in our 1997 survey, only 37 percent of the Usage Panel found this sentence acceptable, and in our 2013 survey, only 34 percent did. The phrase is now chiefly used to describe an argument based on the personal traits of an adversary rather than on the merits of the case: Ad hominem attacks on one's opponent are a tried-and-true strategy for people who have a case that is weak. This sentence was acceptable to 90 percent of the Panel in 1997 and 98 percent in 2013. The expression also has a looser use in referring to any personal attack, whether or not it is part of an argument, as in It isn't in the best interests of the nation for the press to attack him in this personal, ad hominem way. This use was acceptable to 65 percent of the Panel in 1997 and to 72 percent in 2013.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 

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.