unprecedented

[uhn-pres-i-den-tid] / ʌnˈprɛs ɪˌdɛn tɪd /

ADJECTIVE

exceptional, original

Synonyms

STRONGEST

bizarre extraordinary fantastic miraculous new remarkable singular uncommon unheard-of unique unparalleled unrivaled unusual

WEAK

aberrant abnormal anomalous eccentric exotic freakish idiosyncratic marvelous modern newfangled novel odd out-of-the-way outlandish outre outré preternatural prodigious signal sui generis unexampled

Antonyms

STRONGEST

bad common commonplace customary familiar normal ordinary poor regular standard usual

WEAK

known unexceptional unremarkable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The team also examined cytotoxic granules, which are responsible for killing target cells, with unprecedented clarity.

From Science Daily • Apr. 30, 2026

“We are seeing unprecedented internal and external demand for AI compute resources,” chief financial officer Anat Ashkenazi said on the earnings call.

From Barron's • Apr. 29, 2026

"I am overcome with immense anxiety, and I am facing a crisis of unprecedented magnitude."

From BBC • Apr. 29, 2026

“This is unprecedented, unlawful, and going nowhere,” Gomez said in a statement.

From Los Angeles Times • Apr. 28, 2026

For the highly secretive Soviet government, a leadership merry-go-round like this was unprecedented: In the entire history of the USSR, only four men had occupied the leadership post.

From "Spies: The Secret Showdown Between America and Russia" by Marc Favreau

Vocabulary lists containing unprecedented

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Fast Food Nation

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