INTRODUCTION

A

lmost a quarter of a century ago a new dictionary bearing the name

American Heritage

appeared. That book was notable because it did four things and
it did them well. It faithfully recorded the language in easily understood definitions.
It provided guidance toward accuracy, precision, and grace in the use of English
that intelligent people need and seek in a dictionary. It traced, whenever possible,
the development of English words to their origins and keyed many to an Appendix
of Indo-European Roots. And it presented complex lexical data in a typographically
attractive design accented by thousands of photographs and line drawings in spa-
cious margins.

The American Heritage Dictionary of the English Language, Third Edi-
tion

, builds upon this distinguished, innovative foundation.
The pages of the Third Edition, a lexicon of more than 200,000 boldface
forms, hundreds of thousands of meanings, and nearly 4,000 pieces of art, reflect
the rich and varied texture of American English as it has been used over time by a
broad group of educated speakers. This Dictionary is the product of four years of
work by 175 contributors. In preparing the Dictionary, our editors have had access
to a database containing hundreds of millions of lines of text that could be searched
for any word in context.
The A-Z vocabulary, containing more than 16,000 words and meanings new

new entries and meanings in this Edition have much to say about us and our time.
The great majority of the new words relate to social and life patterns; to the life sci-
ences with an emphasis on health, medicine, genetics, and ecology; and to the phys-
ical sciences with an emphasis on computer technology and electronics, physics,
and astronomy.
The goal of the Third Edition is to provide the user with comprehension and
appreciation of the language in a readable manner. Keeping the needs of the con-
temporary user in mind, we have presented the central and often the most fre-
quently sought meaning of a word first. The definitions are worded in concise,
lucid prose without the specialized terms and abbreviations that make most dictio-
naries forbidding and confusing.
The Third Edition contains more than 500 notes and comments on matters of
grammar, diction, pronunciation, and levels and nuances of usage. Citations were
used in identifying new and evolving usage problems, attesting and evaluating the
currency of certain usages, studying various levels of usage, and evaluating their so-
ciolinguistic implications. The 173-member Usage Panel, with 75 new members
and chaired by Geoffrey Nunberg, a linguist associated with Stanford University,
has made an important contribution to the content and direction of the Usage
Notes through responses to periodic surveys developed by the Chair and the editors.
The Usage Panel of the Third Edition consists chiefly of writers, editors, and schol-
ars, 22 of whom are professors of linguistics or English. Other Panelists occupy dis-
tinguished positions in law, diplomacy, government, business, science and
technology, medicine, and the arts. Eighteen are recipients of the Pulitzer Prize and
one is a Nobel Laureate. These men and women, who reside in 28 states across the
land and in Canada and England, are a cross section of today's critical, literary, and
scholarly community.
A list of usage issues—old and new—was prepared by the Chair and the edi-
tors, and from it the usage program for the Third Edition was developed. Some of
the usage issues are entirely new. An example is the Note at


words in English, appear at entries with especially interesting etymologies. These
word histories, such as the one at

nerd

, provide a social, historical, and cultural con-
text for the evolution of words and explain the various linguistic processes that con-
tribute to the development of language.
A great many Modern English words can be traced to the reconstructed ances-
tral language called Proto-Indo-European. The etymologies in the Third Edition,
like those in the First, trace many words to their earliest ascertainable origins, usu-
ally in Proto-Indo-European, by means of cross-references to a new and thorough-
ly revised Appendix of Indo-European Roots. The Appendix, in a major departure
from previous style, gives the root followed by a brief gloss and a list of some of the
Modern English words derived from it. The individual roots entry then follows. For
example, the Modern English words

fierce

, and

treacle

, at first glance strange se-
mantic companions, both derive from the root

*ghwer-

, "wild."
The Third Edition contains hundreds of labeled words and meanings whose

language require the counsel of specialists from many disciplines. These specialists'
names are listed under Special Contributors and Consultants. We wish to thank all
of them for helping us in our pursuit of accuracy and truth. Special thanks go to

John Simpson, Co-Editor of the

New Oxford English Dictionary

, for valuable com-
ments made during the early stages of the project. And to all members of the Edi-
torial Staff who gave unstintingly of their time and expended great effort in the
development of the Third Edition, we express our deepest gratitude.
Anne H. Soukhanov

EDITORIAL AND

PRODUCTION STAFF

EDITORIAL STAFF
E

XECUTIVE

E

DITOR

Anne H. Soukhanov

S


Marion Severynse

V

ICE

P

RESIDENT
AND

D

IRECTOR
OF

E

DITORIAL

, A

RT

E

DITORS

Joseph P. Pickett, David R. Pritchard, David M. Weeks

E

DITOR

Joseph M. Patwell

A

SSOCIATE

E

DITORS

Jim A. Craig, Donna Cremans, Paul G. Evenson, Susan M. Innes,
Nina Judith Katz, James P. Marciano, Martha Fairman Phelps,
Rosemary E. Previte, Hanna Schonthal

A

SSISTANT

E


E

DITOR

, S

YNONOMY

Anne D. Steinhardt

C

ONTRIBUTING

E

DITOR

, P

RONUNCIATION

Rima Elkin McKinzey

C

OORDINATING

E



LERK

Shari Lynn Wheeler

C

OPYEDITING

Frances Barna, Alice P. Carman, Maria A. Morelli

P

ROOFREADING

Kathryn Blatt, Becky Cheston, Jennifer L. Dougherty, Judith L. Drummond, Valerie
A. English, Bruce E. Frost II, Stella Gelboin, Rhonda L. Holmes, Katherine M.
Isaacs, Eric C. Meyer, Maria Rodriguez Montenegro,
Denis Moynihan, James F. Mulhern, Jill R. Norton, Lori Ohliger,
Thelma Prince, Carole A. Ricciardi, Ann M. Rossi, A. Nancy Rourke

PRODUCTION STAFF
P

RODUCTION
AND


Christina M. Granados, Lauren B. Hunnewell
DATABASE DEVELOPMENT AND COMPOSITION SERVICES
Auto-Graphics, Inc.
Paul Cope, Vice President, Publishing Operations
Robert Eiferd, Manager of Programming
Kathi Pittman & Laura Stein, Project Managers
S
TRUCTURED DATABASE DESIGN
Joseph V. Gangemi, Consultant
In Remembrance
Jim A. Craig
1961–1991
Friend, Colleague, and Editor
SPECIAL CONTRIBUTORS
AND CONSULTANTS
USAGE
Geoffrey Nunberg, Ph.D.
Stanford University
DIALECT
Sr. Mary Dominic Pitts, O.P, Ph.D.
Aquinas Junior College
INDO-EUROPEAN ROOTS APPENDIX
Calvert Watkins, Ph.D.
Harvard University
LANGUAGE AND ETYMOLOGY CONSULTANTS
Patrick S. Diehl, Ph.D., University of California, Berkeley
Deborah W. Anderson, Ph.D., University of California, Los Angeles
Martin E. Huld, Ph.D., Department of English, University of California, Los
Angeles
Brian D. Joseph, Ph.D., Department of Linguistics, Ohio State University

University
Greek and Latin
Vincent P. McCarren, Ph.D., Middle English Dictionary
Rex E. Wallace, Ph.D., Classics Department, University of Massachusetts, Amherst
Roger D. Woodard, Ph.D., Classics Department, University of Southern California
North American Indian Languages
Ives Goddard, Ph.D., Department of Anthropology, Smithsonian Institution
Russian, Persian, and Ural-Altaic Languages
Alexander Lehrman, Ph.D., Department of Foreign Languages and Literatures,
University of Delaware
Science Etymology
Sharon L. Marshall, Ph.D., M.D., Harvard and Tufts Universities
Yiddish
Marvin I. Herzog, Ph.D., Department of Linguistics, Columbia University
SPECIAL CONSULTANTS
Architecture
Edward F. Ford, M.Arch., Associate Professor of Architecture, School of
Architecture, University of Virginia
Art
H. Kristina Haugland, M.A., Assistant Curator, Costume and Textiles, Philadelphia
Museum of Art
Cinema
P. Adams Sitney, Ph.D., Professor of Visual Arts in the Council of the Humanities,
Princeton University
Dance
Mara Peets, M.A., Teaching Fellow, Expository Writing Program, New York
University; Writer/Researcher and Assistant Director, Video Dictionary of
Classical Ballet
Economics, Business, and Finance
David L. Scott, Ph.D., Professor of Accounting and Finance, Valdosta State College,

Frank E. Reynolds, Ph.D., Professor of the History of Religions and Buddhist
Studies, Divinity School and Department of South Asian Languages and
Civilizations, University of Chicago
Jack D. Van Horn, Ph.D., Associate Professor, Department of Religion, College of
William and Mary
Science and Technology
Donald C.S. Allison, Ph.D., Professor and Head, Department of Computer Science,
Virginia Polytechnic Institute and State University
William Ira Bennett, M.D., Editor, Harvard Health Letter, Harvard Medical School
Sheila Ewing Browne, Ph.D., Professor of Chemistry and Chair, Department of
Chemistry, Mount Holyoke College
Neal D. Buffaloe, Ph.D., Professor Emeritus of Biology, University of Central
Arkansas
F.J. Collier, Curatorial Associate, Department of Invertebrate Paleobiology,
Museum of Comparative Zoology, Harvard University
Brooks B. Ellwood, Ph.D., Professor, Department of Geology, University of Texas at
Arlington
R.J. Emry, Ph.D., Research Paleontologist and Curator, Division of Vertebrate
Paleontology, Department of Paleobiology, National Museum of Natural
History, Smithsonian Institution
Frank Espey, M.D., Neurological Surgery (retired), Greenville, South Carolina
William S. Haubrich, M.D., Head, Division of Gastroenterology, Scripps Clinical
Research Foundation
Nicholas Hotton III, Ph.D., Curator, Division of Vertebrate Paleontology,
Department of Paleobiology, National Museum of Natural History,
Smithsonian Institution
Lynn Margulis, Ph.D., Department of Biology, University of Massachusetts at
Amherst
J.W. Pierce, Ph.D., Department of Paleobiology, National Museum of Natural
History, Smithsonian Institution

Louis Auchincloss Writer
Ralph Backlund* Senior Contributing Editor, Smithsonian; formerly
Producer and Executive Producer for news and public affairs, CBS; formerly
Associate Editor and Managing Editor, Horizon
John Bainbridge* Staff writer, New Yorker; columnist, Gourmet
Sheridan Baker Professor Emeritus of English, University of Michigan
Letitia Baldrige Author; lecturer on manners
Jacques Barzun Writer; literary consultant; educator
John Baugh Professor of Linguistics, Stanford University
Carolyn Wilkerson Bell Susan Duval Adams Professor of English,
Randolph-Macon Woman's College
Daniel Bell Henry Ford II Professor of Social Sciences Emeritus, Harvard
University; Scholar in Residence, American Academy of Arts and Sciences
Pierre Berton Canadian author and historian
Alton Blakeslee Science Editor (retired), Associated Press
Harold Bloom Writer; Sterling Professor of Humanities, Yale University; Berg
Professor of English, New York University; MacArthur Fellow
Roy Blount, Jr. Writer; Contributing Editor, Atlantic
Kallia H. Bokser Housing Consultant
Dwight Bolinger* Professor Emeritus of Romance Languages and
Literatures, Harvard University; Visiting Professor Emeritus of Linguistics,
Stanford University
The Hon. Julian Bond Formerly Georgia state legislator; Professor,
American University and University of Virginia; lecturer; host, public affairs
television program
The Hon. Daniel J. Boorstin Librarian of Congress Emeritus; recipient,
Pulitzer Prize and National Book Award Medal for Distinguished
Contribution to American Letters
Charles P. Boren Associate Editor (retired), Lewiston (Idaho) Morning
Tribune

Robert W. Creamer Writer; biographer; formerly Senior Editor, Sports
Illustrated
Gene D. Dahmen Attorney; past President, Boston Bar Association
Marshall B. Davidson* Writer; Senior Editor, Horizon; formerly Editor of
Publications, Metropolitan Museum of Art, New York
Robertson Davies* Writer; founding Master, Massey College, University of
Toronto; Professor of English and Drama
Lois DeBakey Writer, lecturer, and consultant; Professor of Scientific
Communication, Baylor College of Medicine
Vine Deloria, Jr. Standing Rock Sioux Tribe Professor of Law, Religious
Studies, Political Science, and History, University of Colorado
Joan Didion Author
Annie Dillard Writer; recipient, Pulitzer Prize
William K. Durr Professor of Education Emeritus, Michigan State University;
past President, International Reading Association
Andrea Dworkin Writer
Freeman J. Dyson Writer; Professor of Physics, Institute for Advanced
Study, Princeton, New Jersey
Anne Edwards Biographer and novelist; past President, Authors Guild
Gretel Ehrlich Writer; Guggenheim Fellow from Wyoming
Ralph Ellison* Writer; educator
Louise Erdrich Author
Carolly Erickson Historian; writer
Howard Fast Writer
Frances FitzGerald Writer; contributor, New Yorker; recipient, Pulitzer Prize
Elizabeth Frank Writer; Joseph E. Harry Professor of Modern Languages and
Literature, Bard College; recipient, Pulitzer Prize
Reuven Frank Author; columnist, New Leader magazine; formerly President,
NBC News; formerly Executive Producer, Huntley-Brinkley Report
John Kenneth Galbraith Economist; writer; formerly U.S. Ambassador to

Author in Residence, Wesleyan University; recipient, Pulitzer Prize
The Hon. Shirley M. Hufstedler Senior Counsel, Morrison & Foerster;
formerly U.S. Secretary of Education; formerly Judge, U.S. Court of Appeals
for the Ninth Circuit
John K. Hutchens* Retired member, Editorial Board, Book-of-the-Month
Club; retired literary and drama reviewer, New York Times, New York Herald
Tribune, and Boston Evening Transcript
Molly Ivins Journalist; syndicated columnist; author
Jennifer James Cultural anthropologist; writer
Joyce Johnson Writer; recipient, National Book Critics Circle Award
William F. Johnston* Associate Professor and Newspaper Internship
Coordinator, School of Communications, University of Washington
Erica Mann Jong Poet, novelist, and essayist
The Hon. Barbara Jordan* Educator, attorney, and writer; Lyndon B.
Johnson Centennial Professor in National Policy, Lyndon B. Johnson School
of Public Affairs, University of Texas at Austin; formerly U.S. Representative
from Texas
June M. Jordan Poet; Professor of African American Studies and Women's
Studies, University of California, Berkeley
Alfred E. Kahn Robert Julius Thorne Professor of Economics Emeritus,
Cornell University; formerly Economic Adviser to the President of the
United States
Roger Kahn Author; journalist
Justin Kaplan Writer; recipient, Pulitzer Prize and National Book Award
Stanley Kauffmann Film critic, New Republic
Alfred Kazin Writer; Distinguished Professor of English Emeritus, the
Graduate Center, City University of New York
Trudy Kehret-Ward Educator; writer
Garrison Keillor Author and host of A Prairie Home Companion
Elizabeth T. Kennan Formerly President, Mount Holyoke College

William Manchester Writer-in-Residence and Adjunct Professor of History
Emeritus, Wesleyan University; Fellow, Pierson College, Yale University
Robert Manning Writer; editor; formerly Editor in Chief, Atlantic
Richard Curry Marius Novelist and biographer; Director of Expository
Writing, Harvard University
Suzanne R. Massie Writer; lecturer on Russian history and culture; Fellow,
Harvard Russian Research Center
Armistead Maupin Author
Alice E. Mayhew Editorial Director, Trade Division, Simon & Schuster
The Hon. Eugene McCarthy Writer, poet, and lecturer; formerly U.S.
Senator from Minnesota
David McCord Poet; essayist; Honorary Curator of the Poetry and Farnsworth
Rooms, Harvard University Library
Kenneth McCormick Senior Consulting Editor, Bantam Doubleday Dell;
formerly Editor in Chief, Doubleday & Company, Inc.
Mary McGrory Journalist; columnist, Washington Post and Universal Press
Syndicate; recipient, Pulitzer Prize
Leonard Michaels Professor of English, University of California, Berkeley
James A. Michener Writer; recipient, Pulitzer Prize and Presidential Medal
of Freedom
Hassan Minor, Jr. Vice President for Government Affairs, Howard
University
Richard Scott Mitchell* Mineralogist; educator; writer; Professor of
Environmental Science, University of Virginia; Executive Editor, Rocks and
Minerals
Jessica Mitford Writer
Lance Morrow Essayist and Senior Writer, Time; recipient, National
Magazine Award
The Hon. Daniel Patrick Moynihan U.S. Senator from New York;
formerly Professor of Political Science, Harvard University

Robert Saudek Television producer; former Division Chief, Library of
Congress; Lecturer on Visual Studies, Harvard University; founding President,
Museum of Broadcasting
Antonin Scalia Supreme Court Justice
Arthur M. Schlesinger, Jr. Writer; historian; educator; formerly Special
Assistant to the President of the United States; recipient, Pulitzer Prize
Glenn T. Seaborg University Professor of Chemistry, University of
California, Berkeley; formerly Chair, U.S. Atomic Energy Commission;
recipient, Nobel Prize
Art Seidenbaum* Journalist; Editor, Opinion Section, Los Angeles Times
Harvey Shapiro Poet; Senior editor, New York Times Magazine
Elaine Showalter Professor of English, Princeton University
John Simon Drama critic, New York; film critic, National Review
Carlota S. Smith Centennial Professor of Linguistics; In Charge, Cognitive
Science Program, University of Texas
Jack Smith* Columnist, Los Angeles Times
Susan Sontag Writer
Theodore C. Sorensen Attorney; writer; formerly Special Counsel to the
President of the United States
Susan Stamberg Special Correspondent, National Public Radio
Wallace Stegner* Writer; founder and formerly Director, Stanford
University Writing Program; recipient, Pulitzer Prize and National Book
Award
Shane Templeton Foundation Professor of Curriculum and Instruction,
University of Nevada, Reno
Paul Theroux Novelist; travel writer
Elizabeth Marshall Thomas Writer
Nina Totenberg Legal Affairs Correspondent, National Public Radio and
ABC’s “Nightline”; panelist, “Inside Washington”
Elizabeth C. Traugott Professor of Linguistics and English, Stanford

years of social history. Dialects embody patterns of sound, syntax, and meaning; lit-
erature documents those spoken forms in poetry and prose. Through the process of
communication, a native language becomes the social inheritance of its speakers. In
describing the linguistic resources of American English this Dictionary becomes a
cultural property book for all the American people.
A century before Noah Webster organized his first American dictionary
(1806), Jonathan Edwards defined the materials of inquiry in remarkably modern
terms, in words that should appeal to everyone, whether general reader or lexicog-
rapher:
By conversation, I mean intelligent beings expressing their minds one to another in
words, or other signs intentionally directed to us for our notice, whose immediate and
main design is to be signification of the mind of him who gives it.
Defining conversation as one might characterize language today, Edwards rec-
ognized the conceptual, symbolic, and functional aspects of human communica-
tion: the engagement of thought, the use of signs, and the transmission of ideas
from one mind to another.
Today the English language makes conversation possible among 350 million
native speakers who share its system of symbolic behavior. This number includes
speakers of American, Australian, British, Canadian, Irish, New Zealand, and Scots
English as members of the most influential speech community in the history of civ-
ilization. Their common cultural heritage makes possible the use of a single lan-
guage by the members of these different groups, but each national variety with all
its regional and social dialects reflects unique social experience. In a natural history
of a national language, the richest gatherings of such material endure in folk
speech the unaffected, conservative expression of common people, as preserved in
their oral traditions. National folk usage forms a subset of social dialects within
regional dialects that comprise the larger divisions, the national varieties of a lan-
guage.
Such experience makes a national vocabulary the most accessible and produc-
tive source of cultural information. Words are the complex linguistic structures

almost all the rest. The lexicographer not only says that a certain people have or do a cer-
tain thing, but, being evidently a disinterested party, it may be allowed that he brings suf-
ficient evidence to prove it. He does not so much assert as exhibit. He has no transient
or private purposes to serve.
THE HISTORICAL BACKGROUND OF AMERICAN ENGLISH
This natural history of the American people is the essential gift of the mother
tongue. With all speakers of the English language Americans share the results of
1,500 years of linguistic development, and English had itself evolved for a full mil-
lennium before the first American words were spoken in Virginia. Furthermore, as
a member of the Germanic language group of the Indo-European language family,
English shares an ultimate heritage with most of the modern languages of Europe
and Asia and with the official languages of every government in North and South
America.
The essential features of the Germanic languages are these: (1) a thoroughgo-
ing modification of the consonant system, especially the so-called First Germanic
Consonant Shift, which distinguishes the system from all other Indo-European
consonant patterns. It is captured in Grimm’s Law and accounts for the differences
between initial sounds in such cognate pairs as Latin/English pater/father, tu/thou,
and hortus/garden; (2) mutation of vowels by neighboring sounds (umlaut) and the
adaptation of the vowel system to express grammatical functions; (3) regular word
stress on the first syllable; (4) seven classes of strong (irregular) verbs, such as sing,
sang, sung; (5) three classes of weak (regular) verbs, such as love, loved, loved; (6)
strong and weak adjectives that disappeared in Medieval English but endure else-
where, as in Modern German and Norwegian definite and indefinite articles; and
(7) a core vocabulary of common words. These shared characteristics define the 13
modern Germanic languages: Danish, Faroese, Icelandic, Norwegian, Swedish,
German, Yiddish, Low German, Dutch, Afrikaans, Flemish, Frisian, and English.
The history of the English language begins with the arrival of Germanic invad-
ers from the continent, said to be in
A.D. 449 according to the Anglo-Saxon Chroni-