Synonyms of unprecedented

unprecedented

adjective

ˌən-ˈpre-sə-ˌden-təd 

as in novel

not known or experienced before

this is an unprecedented request for the reference desk

Synonyms & Similar Words

• novel
• new
• strange
• unfamiliar
• fresh
• unheard-of
• original
• unknown
• unique
• unaccustomed
• innovative
• unconventional
• pioneering
• nontraditional
• untried
• unused
• trailblazing
• pathbreaking
• unworn

Antonyms & Near Antonyms

• familiar
• old
• hackneyed
• traditional
• tired
• conventional
• established
• time-honored
• tried
• derivative
• warmed-over
• imitative
• tried-and-true

Example Sentences

Recent Examples of unprecedented

Yet, is winning election to an unprecedented fourth term a feat too daunting for even Lula, the great giant of the Latin American left? — David Unsworth, FOXNews.com, 5 Oct. 2026

As atmospheric carbon rises to levels beyond precedent in human history and consequently raises the global temperature to levels unprecedented on the human scale, the importance of places where carbon is sequestered becomes ever greater. — Matthew Wills, JSTOR Daily, 5 Oct. 2026

When Sofia Coppola was granted access to the Château de Versailles’ hallowed halls for her 2006 film, Marie Antoinette, their collaboration was unprecedented. — Stephanie Sporn, HollywoodReporter, 5 Oct. 2026

This year, the playing field was literally redrawn with unprecedented mid-decade redistricting efforts. — ABC News, 4 Oct. 2026