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

first (fûrst)
Share:
n.
1. The ordinal number matching the number one in a series.
2. The one coming, occurring, or ranking before or above all others.
3. The beginning; the outset: from the first; at first.
4. Music The voice or instrument highest in pitch or carrying the principal part.
5. The transmission gear or corresponding gear ratio used to produce the range of lowest drive speeds in a motor vehicle.
6. The winning position in a contest: finished the season in first.
7. Baseball
a. First base.
b. A first baseman.
adj.
1. Corresponding in order to the number one.
2. Coming before all others in order or location: the first house on your left.
3. Occurring or acting before all others in time; earliest: the first day of spring.
4. Ranking above all others, as in importance or quality; foremost: was first in the class.
5. Music Being highest in pitch or carrying the principal part: first trumpet.
6. Of, relating to, or being the transmission gear or corresponding gear ratio used to produce the range of lowest drive speeds in a motor vehicle.
7. Of, related to, or being a member of the US president's household: first daughter Sasha Obama.
adv.
1. Before or above all others in time, order, rank, or importance: arrived first; forgot to light the oven first.
2. For the first time.
3. Rather; preferably: would die first.
4. In the first place; to begin with; firstly.
Idiom:
first off/thing
From the start; immediately: Why wasn't I told first off? When I get to work, I have to call my lawyer first thing.
[Middle English, from Old English fyrst; see per1 in the Appendix of Indo-European roots.]
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.

American Heritage Dictionary Products