Here's why:
* Dictionaries primarily define the meaning of words. While some dictionaries may include a section for synonyms, they are not designed to be comprehensive resources for antonyms.
* Thesauruses are specifically created to list synonyms and antonyms for words. They provide a wider range of options and help you choose the most appropriate antonym for your specific context.
Example:
Let's say you want to find the antonym for the word "happy". A thesaurus will give you options like:
* Sad
* Unhappy
* Depressed
* Miserable
A dictionary might not list these antonyms directly, or it might only list a few.
Remember:
* Thesauruses can be helpful, but it's essential to use them carefully. Antonyms may not always be perfect opposites and might have subtle differences in meaning.
* Always consider the context of your writing to choose the most suitable antonym.