What is having no example or similar case; being without precedent; unprecedented; unparalleled. "A revolution . . . unexampled for grandeur of results." De Quincey called?

unexampled — Having no example or similar case; being without precedent; unprecedented; unparalleled. "A revolution . . . unexampled for grandeur of results." De Quincey. (Webster's 1913.)

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