UNPRECEDENTED definition: 1. never having happened or existed in the past: 2. never having happened or existed in the past…. Learn more.

unprecedented, adj. meanings, etymology, pronunciation and more in the Oxford English Dictionary

If something is unprecedented, it has never happened before. Such a move is rare, but not unprecedented.

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The meaning of UNPRECEDENTED is having no precedent : novel, unexampled. How to use unprecedented in a sentence.

Define unprecedented. unprecedented synonyms, unprecedented pronunciation, unprecedented translation, English dictionary definition of unprecedented. adj. Having no previous example: …

From Longman Dictionary of Contemporary English un‧pre‧ce‧dent‧ed /ʌnˈpresɪdentɪd/ AWL adjective never having happened before, or never having happened so much He took the unprecedented step …

UNPRECEDENTED definition: without previous instance; never before known or experienced; unexampled or unparalleled. See examples of unprecedented used in a sentence.

Jan 17, 2026 · Adjective unprecedented (not comparable) Never before seen, done, or experienced; without precedent.

Climate risk assessment: Charleston County, South Carolina - Woodwell

Jan 17, 2026 · Adjective unprecedented (not comparable) Never before seen, done, or experienced; without precedent.

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