100 Words Every Fourth Grader 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 students in the upper grades of elementary school, 100 Words Every Fourth Grader Should Know is the latest book in the popular 100 Words series from the American Heritage® Dictionaries. This book includes one hundred words of varying degrees of difficulty, representing the kind of vocabulary students often encounter in their classes and in their reading. From accommodate to zest, with stops along the way at frank, persuade, and vengeance, the words are invariably intriguing and useful. Each entry includes the word's pronunciation, clear definitions of its various senses, and one or more short example sentences, along with a longer quotation from a classic or contemporary author showing how the word is used in a broader context. Here is a complete list of the words in 100 Words Every Fourth Grader Should Know accommodate afterthought allegiance aloft ancestor anticipation antics apparel ascend beckon brink catastrophe coax compassion complexion content courteous cringe derelict dignity distaste dormant elaborate endure enforce exertion expanse extraordinary foliage foremost frank function futile gaze glimmer glimpse grimace headstrong hesitate hoist immense imperceptibly indication inscription instinctive intent interior jar keepsake knack literacy lurch makeshift malicious massive meager melancholy merge mingle minuscule momentary nape nimble obstinate opt overwhelming pact pandemonium persuade phenomenal ponder quantity quaver quench radiant ravine recipient resentful satisfactory sensitive sentiment shudder sickly sleek solemn soothe stagger stern tantalize temptation transform unscrupulous vain vengeance violate vital vivid wistful yield zest 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. 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