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A THESAURUS is a book of synonyms and antonyms.
SYNONYMS
e.g.
‘fix’ and ‘restore’ are synonyms of ‘mend’
ANTONYMS
e.g.
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Words that have similar meanings
Words that have opposite meanings
‘cramped’ and ‘small’ are antonyms of ‘spacious’
A THESAURUS is useful:
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to widen your vocabulary
to find a more precise word
to give you a variety of words to choose from
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Easy to use THESAURUSES are arranged in alphabetical order like a dictionary
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It is useful to use a dictionary and a thesaurus together when using a word that is
new to you, so that you can check its exact meaning.
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Only some of the words in an entry will be useful to you, so choose carefully.
An example from a thesaurus. (Microsoft Word 97)