Easy to use. Over 4,000 main entries, with more than 36,000 synonyms to help add precision and color to writing. Hundreds of word group and antonym features * Reference Book Type: Thesaurus; Subjects: N/A; Age Recommendation: Grades 4-6; Language(s): English. * American Heritage; Children"s Thesaurus; HOUGHTON MIFFLIN; Thesaurus; Libraries; Schools; Education; Teachers; Students