Thesaurus.com
Dictionary.com
Showing results for unheard-of. Search instead for unheard of/2.
Definitions

unheard-of

[uhn-hurd-uhv, -ov, -uhv] / ʌnˈhɜrdˌʌv, -ˌɒv, -əv /


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.

"That's an unheard-of pace of innovation in developing complex structural alloys."

From Science Daily • Mar. 10, 2026

Those visions, as unheard-of divine communion with a woman, draw her into conflict with priests who find them false.

From Los Angeles Times • Nov. 7, 2025

“Imagine that the tools of chemistry could be used to create entirely new materials with unheard-of properties,” Heiner Linke, chair of the Nobel Committee for Chemistry, said Wednesday.

From The Wall Street Journal • Oct. 8, 2025

His thesis at the Navy Academy was in the unheard-of topic of liquid-fuel engines.

From BBC • Aug. 9, 2025

At Thurmond, that was an almost unheard-of luxury.

From "The Darkest Minds" by Alexandra Bracken