nonesuch
/ˈnʌnˌsʌtʃ/
noun
- A person or thing that is without equal; a paragon or nonpareil.
- In her field, she was considered a nonesuch, unmatched by any competitor.
- He called his garden a nonesuch, full of rare and perfect blooms.
- The old violin was a nonesuch among instruments, with a tone no other could replicate.