The Concise Oxford Thesaurus. A Dictionary of Synonyms.

A thesaurus is an essential companion to a conventional dictionary, and a powerful aid to better writing and speaking.
This new thesaurus combines all the features of an up-to-date A-Z thesaurus with thematic coverage of a wide range of vocabulary, including proper names. It also provides antonyms through cross-references to sets of opposite terms.
* Over 350,000 synonyms and antonyms
* Easy-to-use A-Z format
* Over 400 tables for thematic vocabulary sets, alphabetically placed throughout the text providing access to thousands of useful words not available in a conventional thesaurus
* Clear sense divisions and useful example phrases
* Commonest synonyms listed first
* Full labelling of words which are literary, informal, technical, etc
* Ideal for word-games

Keep this book beside you and increase your command of English language.