* Direct contradiction: Antonyms for this concept could be consistency, harmony, agreement, coherence.
* Juxtaposition of opposites: Here, antonyms might be similarity, congruence, likeness, unity.
Ultimately, the best "antonym" for oxymoron depends on the specific context in which you're using the word.
For example, if you're talking about a phrase, a good antonym might be clear statement, literal expression, or unambiguous phrase.
Here are some other ways to express the opposite of an oxymoron:
* A phrase that is logically consistent
* A phrase that uses words with similar meanings
* A phrase that is not paradoxical
* A phrase that is easily understood
It's important to remember that "oxymoron" is a specific term, so antonyms need to be chosen carefully to accurately convey the opposite meaning.