The New Roget's Thesaurus in Dictionary Form: Revised Edition

When the correct word or phrase is hanging just out of reach, this alphabetical thesaurus will inevitably come to the rescue. Over 17,000 entries steer the reader through a maze of synonyms, antonyms, and related concepts. In addition, the book functions as a major vocabulary-booster--just watch those awed expressions the next time you drop "dimidiate" or "ewer" into a conversation.