adjective / noun
nonpareil
nahn-puh-REL/ˌnɑːnpəˈrel/
Unequaled in excellence.
The exceptional pearl is a nonpareil among the fine specimens around it.

Etymology
“Not equal” here expresses being unequaled or peerless. First used as an adjective meaning “having no equal,” nonpareil became a noun for a person or thing deserving that description.
More examples
- As a pastry chef, he is a nonpareil.
- The team relies on her nonpareil skill as a negotiator.
- These two athletes are nonpareils in their respective sports.
Forms
nonpareil · nonpareils
Similar words
- peerless
- Likewise means without equal and often conveys formal praise.
- unmatched
- Emphasizes that no competitor equals a particular quality or achievement.
- unsurpassed
- Means none is better, though others may be equally good.