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

Social-media platforms give Americans unprecedented opportunities to watch their representatives’ every move. — Rose Horowitch, The Atlantic, 8 July 2026

Now, in one of the clearest observations ever made, scientists have watched one of those moments unfold in real time and with unprecedented detail in an active seafloor spreading event in the Indian Ocean. — Sam MacDonald, Scientific American, 8 July 2026

South Florida has seen an unprecedented influx of wealth from out of state this year, including several of the world’s richest people buying waterfront real estate in Miami and Miami Beach. — Catherine Odom july 8, Miami Herald, 8 July 2026

Meanwhile, the president and his supporters have contributed to the stoking of an unprecedented surge in threats and intimidation toward federal judges and some Supreme Court justices. — Henry Gass, Christian Science Monitor, 7 July 2026