경쟁 상대가 없어 다른 무엇보다 뛰어난.
Better than any other of the same type; having no equal or competition.
예문:
"The athlete's record of ten consecutive gold medals remains unrivalled in Olympic history."
"This software provides unrivalled security features that protect user data from any external threats."
"The valley is famous for its unrivalled natural beauty and diverse wildlife."