unobservable

adjective

un·​ob·​serv·​able ˌən-əb-ˈzər-və-bəl How to pronounce unobservable (audio)
Synonyms of unobservablenext
: incapable of being observed : not observable
particles so small that they are unobservable

Examples of unobservable in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In fact, the speedy planet is occulted (hidden) by the sun's disk, but of course, this event is unobservable. — Joe Rao, Space.com, 2 May 2026 These unobservable behaviors may be among the most important for educators. — Dan Fitzpatrick, Forbes.com, 23 Feb. 2026 Is the theory of the unobservable multiverse science or mere speculation? — Literary Hub, 19 Nov. 2025 So, within standard general relativity, Einstein–Rosen bridges are unstable and unobservable. — Rupendra Brahambhatt, Interesting Engineering, 17 Jan. 2026 See All Example Sentences for unobservable

Word History

First Known Use

1615, in the meaning defined above

Time Traveler
The first known use of unobservable was in 1615

Rhymes for unobservable

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Browse Nearby Words

unobscured
unobservable
unobservance
See all Nearby Words

Cite this Entry

“Unobservable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unobservable. Accessed 10 Jul. 2026.

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