100 More Words Every High School Graduate Should Know 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 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 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. -- AMERICAN HERITAGE DICTIONARY APP The new American Heritage Dictionary app is now available for iOS and Android. 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. OPEN DICTIONARY PROJECT Share your ideas for new words and new meanings of old words! Start Sharing Now! -- See word lists from the best-selling 100 Words Series! Find out more! INTERESTED IN DICTIONARIES? Check out the Dictionary Society of North America at http://www.dictionarysociety.com Ideal for juniors and seniors in high school as well as adults who want to see how their vocabulary skills stack up, 100 More Words Every High School Graduate Should Know is the latest book in the popular 100 Words series from the American Heritage Dictionaries and a sequel to the original title in the series (published in 2002). This book includes one hundred words of varying degrees of difficulty, representing the kinds of words high school students encounter in their classes and on standardized tests. From alacrity to zygote, with stops along the way at eponymous and lambent, the words are invariably intriguing and useful. Each entry includes the definition, pronunciation, and etymology, and often one or more quotations from classical and contemporary authors showing how the word is used in context. Here is a complete list of the words in 100 More Words Every High School Graduate Should Know alacrity amorphous anathema anomie antithesis apotheosis arcanum bathos bellwether bespeak caldera coalesce compunction conflate crepuscular cynosure debunk derivative diaphanous duress efface effulgent eponymous eureka excoriate fastidious feint feral gaffe galvanize gravitas habiliments heterodox hydrocarbon impugn inchoate indigenous innate intransigent juggernaut kelvin lacuna lambent lineament Luddite mellifluous miasma munificent nascence neophyte nexus noisome nominal obliquity ontogeny opprobrium ossify oviparous palpable panoply penurious permutation perpetuity perquisite phalanx placebo proximate querulous quorum rapacious refractory repudiate risible salient sanctimonious sardonic scurrilous sequester Sisyphean solicitous subsume tenacious travesty triage truculent umbrage unregenerate untenable usury verisimilitude vernacular vertiginous vociferous welter wiki winsome xeric yaw zero-sum zygote 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 The American Heritage Dictionary, 5th Edition The American Heritage Dictionary of Idioms The American Heritage Roget's Thesaurus Curious George's Dictionary The American Heritage Children's Dictionary CONTACT US Customer Service Make Me An Author Ebooks Help with Glose Reader ABOUT US Company Profile Leadership Team Corporate Social Responsibility HarperCollins Careers HarperCollins Imprints HarperGreen Social Media Directory Accessibility FOR READERS Browse Reading Guides FOR AUTHORS Submit a Manuscript Report Piracy Agent Portal MEDIA Publicity Contacts Press Room SERVICES HarperCollins Speakers Bureau Library Services Academic Services Desk & Exam Copies Review Copies OpenBook API Marketing Partnerships COVID-19 RESOURCES & PERMISSIONS Permissions for Adult Online Readings Permissions for Kids Online Readings SALES & RIGHTS Booksellers & Retailer Ordering HarperCollins Catalogs Permissions Subsidiary Rights Media Rights and Content Development GLOSE APP iPhone Android GLOBAL DIVISIONS HarperCollins US HarperCollins Canada HarperCollins Christian HarperCollins Australia HarperCollins India HarperCollins UK Terms of Use • Terms of Sale • Your Ad Choices • Privacy Policy • California Privacy Policy Do Not Sell My Personal Information Copyright 2022 HarperCollins Publishers 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.