Unrivaled (adjective)

1. Having no equal or competitor.
2. Unsurpassed or unmatched in quality or excellence.

Origin:

From the latin word 'inrivallis' meaning 'having no equal or competitor'.

Examples:

1. The athlete's performance was unrivaled and she won the competition easily.
2. The chef's cooking skills were unrivaled and he was considered the best in the country.
3. The singer's voice was unrivaled and she became famous overnight.
4. The company's products were unrivaled and they dominated the market.
5. The museum's collection was unrivaled and considered the finest in the world.