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.

Unprecedented AI capital spending in the U.S. is already a significant driver of gross domestic product, challenging consumer spending as the dominant engine of economic growth.

From The Wall Street Journal • Mar. 23, 2026

The study, titled "Unprecedented burning in tropical peatlands during the 20th century compared to the previous two millennia," is published in Global Change Biology.

From Science Daily • Mar. 19, 2026

Unprecedented demand for temporary accommodation is causing "potentially unsustainable financial pressure" for homelessness services in Northern Ireland, according to a report from the NI Audit Office.

From BBC • Mar. 24, 2025

Unprecedented change brings us to the edge of survival.

From Salon • Mar. 7, 2025

Unprecedented bargains were offered in gigantic letters by the new proprietors, "Eisendrath & Heide…"—the rest of the name flapped loosely in the wind.

From With the Procession by Fuller, Henry Blake

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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