Combining scholarly authority with a new awareness of today's communication demands, Roget's 21st Century Thesaurus is the simple, reliable way to find the perfect word for your needs. It features an easy-to-use dictionary format plus a revolutionary Concept Index that arranges words by idea, thus enhancing the user's process of association and leading to scores of additional selections. The inclusion of a wide spectrum of words and phrases with each entry from sophisticated choices to completely new vocabulary in the language — brings users an exceptional number of alternatives to fit any variation of style and tone.