Definitions

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 Goldman report, authored by Ryan Hammond and five colleagues, highlights the risk of this unprecedented capital investment, however.

From MarketWatch • Jun. 11, 2026

They say much has improved since Green Dot took over the beleaguered campus in 2008, an unprecedented move for the nation’s second-largest school system: It was the first time that L.A.

From Los Angeles Times • Jun. 11, 2026

Pope Leo flew to Spain on Saturday, starting his visit in Madrid where he gave an unprecedented speech to the Spanish parliament and held an open-air mass with 1.5 million people.

From Barron's • Jun. 10, 2026

The latest generation of AI models can detect software weaknesses at unprecedented speed.

From The Wall Street Journal • Jun. 10, 2026

However, an unprecedented rainfall which went on for over a month changed all that.

From "Cannery Row" by John Steinbeck

Vocabulary lists containing unprecedented

The SAT: Words to Capture Tone, List 5

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The New SAT: Words to Capture Tone

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Fast Food Nation

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