Is there synonym for the word antonym?

While there isn't a perfect synonym for "antonym", here are some words that convey similar meanings, depending on the context:

General opposites:

* Opposite

* Contrary

* Reverse

* Inverse

* Counterpart (when referring to a specific opposing word)

More specific terms:

* Antithesis (emphasizes a strong and direct contrast)

* Contradiction (emphasizes a direct disagreement)

* Negation (emphasizes the opposite of a statement or idea)

The best word to use depends on the specific context and the nuance you want to convey. For example:

* "The word 'hot' has the antonym 'cold'."

* "The two political candidates represent opposing views."

* "The inverse of multiplication is division."

* "The antithesis of love is hatred."

Remember that synonyms are not always perfect replacements. They can have different shades of meaning and may not fit every situation.