- The Kingfisher First Thesaurus is the ideal alphabetical thesaurus to help young children expand their vocabulary. The 100 entry words are clearly defined and their synonyms and antonyms given. Each entry word is also used in a sentence. Over 100 black and white illustrations make meanings clear. Fun word games and activities help children develop stronger language skills. Illustrated two-page theme spreads look at the details of a subject and help broaden vocabulary.