1,800 English idioms, phrases and expressions, with their meanings and origins explained.
Merriam-Webster's Collegiate Dictionary, Tenth Ed.
Allows regular and wildcard searching, so you can find all the words ending in a given suffix.
Your dictionary.com (A Web of Online Dictionaries)
It provides links to more than 400 dictionaries in more than 130 different languages.
Dictionary.com is a free online dictionary, thesaurus, translator, word of the day, crossword puzzles and word games, and vocabulary learning resources for many languages.
It is an online version of the Merriam-Webster Thesaurus.
It is an online version of Roget's Thesaurus of English words and phrases.
Britannica Online Academic Edition
Online version of the Encyclopedia Britannica. Use this powerful resource to search or browse for information in encyclopedias, magazines, videos, and Web sites.
Encyclopedia.com has more than 100 trusted sources, including encyclopedias, dictionaries, and thesauruses with facts, definitions, biographies, synonyms, pronunciation keys, word origins, and abbreviations.
Reference sources are great resources to use as you get started on your topic. They are not intended to be read cover-to-cover, but rather provide you with more concise information as you begin to explore a topic. Reference sources generally provide: