Unprecedented
/əˈnprɛsɪˌdɛntɪd/
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Definition
(adj) Never before seen, done, or experienced; without precedent.
Sentence Examples
The unprecedented drought did severe damage to the wheat harvest.
The Tokyo stock market recorded an unprecedented loss.
CEFR Practice Quiz
The region experienced ____ rainfall this month, which led to several major floods in the low-lying areas of town today.