1. of the highest kind, quality, or order; surpassing all else or others; supreme; extreme: superlative wisdom.
2. Grammar . of, pertaining to, or noting the highest degree of the comparison of adjectives and adverbs, as smallest, best, and most carefully, the superlative forms of small, good, and carefully. Compare comparative ( def. 4 ) , positive ( def. 20 ) .
3. being more than is proper or normal; exaggerated in language or style.
Wordsmith Wednesdays made-up example sentence:
Our professor assured us that superlative term papers were rare.
Check out the word on Dictionary.com for pronunciation and additional definitions.