Antonym, << AN tuh nihm, >> is a word that has the opposite meaning of another word. For example, fast and slow are opposites and therefore antonyms.
Words that mean the same or approximately the same as one another are called synonyms. Many dictionaries follow the definition of a word with a list of synonyms. Sometimes, a list of antonyms follows the synonyms. A special dictionary called a thesaurus provides lists of synonyms and antonyms.
