unsurpassed

Unsurpassed is an adjective that describes something that has no equal in quality, extent, or achievement; it denotes a standard that cannot be surpassed.

The word combines the negating prefix un- with surpass, plus the participial ending -ed, and it entered English in the early modern period.

In use, unsurpassed can modify people, objects, or performances: for example, "unsurpassed skill," "unsurpassed scenery," or "an unsurpassed record." In general, it conveys high praise and is common in formal writing, critiques, and marketing, though it can verge on hyperbole if misapplied.

Synonyms include unmatched, unequaled, unparalleled, and incomparable; antonyms include surpassed, inferior, and ordinary. The word is close in meaning to unsurpassable, and the slightly more common term 'unrivaled' is often used in similar contexts.