unprecedented
CEFR: C1
Never having happened, existed, or been experienced in all recorded human history.
SPELLING TRAP: Note the spelling with 'c' after 'pre-': u-n-p-r-e-c-e-d-e-n-t-e-d (from precedent).
Synonyms
- unparalleled
- groundbreaking
Common Collocations
- unprecedented scale
- unprecedented challenge
- unprecedented levels
Example Sentence
The global economy faced an unprecedented contraction in international aviation and hospitality revenues.