Unsurpassed (adjective)

Not surpassed in quality, ability, or achievement.

Origin:

Late middle english (in the sense "not surpassed in quality or achievement"): from un- (expressing negation) + surpassed, past participle of surpass.

Examples:

1. Her beauty was unsurpassed in the kingdom.
2. His athletic ability was unsurpassed in the world.
3. The quality of the product was unsurpassed.
4. The achievement of the company was unsurpassed.
5. The creativity of the artist was unsurpassed.