* Comparative: If superlative refers to the highest degree of something (e.g., "the most beautiful"), then the antonym could be comparative, referring to a comparison between two things (e.g., "more beautiful").
* Inferior: If superlative refers to the best or most excellent, the antonym could be inferior, meaning lower in quality or rank.
* Ordinary: If superlative refers to something exceptional or outstanding, the antonym could be ordinary, meaning typical or unremarkable.
* Mediocre: Similar to ordinary, mediocre can be used as an antonym for superlative when referring to something that is average or below average in quality.
Ultimately, the best antonym for superlative depends on the specific context in which it's used.