unknowable

adjective

un·​know·​able ˌən-ˈnō-ə-bəl 

: not knowable

especially : lying beyond the limits of human experience or understanding

unknowability

ˌən-ˌnō-ə-ˈbi-lə-tē 

noun

Examples of unknowable in a Sentence

a God whose nature is unknown and unknowable

Recent Examples on the Web

And then, aren’t cats emblematic of whatever is familiar but ultimately unknowable? —Barry Schwabsky, Artforum, 1 Apr. 2025

Definitive answers to these questions are likely unknowable. —Terina Allen, Forbes.com, 31 Mar. 2025

In the lab, mind-reading technology promises to reveal previously unknowable information about how our brains construct thoughts, make decisions, and guide our actions. —Celia Ford, Vox, 19 Feb. 2025

Now physicists are connecting those unknowable mathematical systems with an increasing number of physical ones and thereby beginning to map out the hard boundary of knowability in their field as well. —Charlie Wood, Wired News, 6 Apr. 2025

Word History

First Known Use

14th century, in the meaning defined above

Rhymes for unknowable

• knowable

Kids Definition

unknowable

adjective

un·​know·​able ˌən-ˈnō-ə-bəl 

ˈən-

: not knowable

some facts in the case may remain unknowable