Being in or attaining the greatest or highest degree; very intense:
Highest in degree; utmost
In Kant's theory of knowledge, being beyond the limits of experience and hence unknowable.
Situated at the farthest point or limit; most extreme or distant; farthest
Find another word for unsurpassable. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for unsurpassable, like: better, extreme, supreme, transcendent, ultimate, utmost, uttermost and big.