1Our bestselling (over 1.5 million copies sold ) Clear and Simple Thesaurus Dictionary has been fully REVISED and UPDATED, and now it lists a definition, part of speech, synonyms, antonyms, and a sample sentence for each entry. It has been formatted to be easy for kids to use, and is every kid's perfect reference to English words The thesaurus and dictionary elements together in one book make it easy for readers to learn new words as they look up familiar ones, too.