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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.

Israel’s Ben Gurion Airport has entered unprecedented territory by staying open through the war.

From The Wall Street Journal • Apr. 8, 2026

"This ancient immigrant gives us an unprecedented look at conditions in the early universe," said Ji.

From Science Daily • Apr. 4, 2026

That is high for an aerospace and defense company, but not unprecedented.

From Barron's • Apr. 3, 2026

In an effort to put a dent in the state’s housing shortage, California is considering something unprecedented: getting into the construction insurance business.

From Los Angeles Times • Apr. 3, 2026

State governments have been forced to shift funds from public services, education, health, and welfare to pay for incarceration, and they now face unprecedented economic crises as a result.

From "Just Mercy" by Bryan Stevenson