An essential volume for every reference shelf, The Concise Roget's International Thesaurus ® is the most comprehensive mass market paperback thesaurus available today. Containing more than 230,000 words, including slang, idiom, parts of speech, and technical terms, it remains the ultimate writing tool for organizing thoughts and mastering the nuance of expression. More complete and authoritative than other thesauruses, the revised and updated sixth edition offers a revolutionary method of organization, grouping synonyms, antonyms, and related words together into 1,075 numbered categories, eliminating the unnecessary repetition and time-consuming cross-referencing so common in other thesauruses. With an easy-to-use index for quick referencing, The Concise Roget's International Thesaurus® is the first source to which writers, students, and speakers should turn to add eloquence, weight, and style to their spoken and written ideas and sentiments.