Synonyms of unobservable

unobservable

adjective

as in imperceptible

Related Words

• imperceptible
• indistinct
• unnoticeable
• indiscernible
• disappeared
• invisible
• vanished
• dissolved
• insignificant
• inconspicuous
• unobtrusive
• vague
• faint
• melted
• hidden
• evanesced
• latent
• vaporized
• evaporated
• slight
• disguised
• concealed
• covert
• sightless
• obscure
• shrouded
• viewless
• buried

Dissimilar Words

• visible
• observable
• apparent
• visual
• seeable
• detectable
• noticeable
• perceptible
• discernible
• viewable

Example Sentences

Recent Examples of unobservable

But responsibility diffuses across developers, deployers, and users, and interaction loops remain private and unobservable. — Deb Roy, The Atlantic, 15 Feb. 2026

So, within standard general relativity, Einstein–Rosen bridges are unstable and unobservable. — Rupendra Brahambhatt, Interesting Engineering, 17 Jan. 2026

Is the theory of the unobservable multiverse science or mere speculation? — Literary Hub, 19 Nov. 2025

Its nucleus is also far bigger than other notable comets, while its arrival time was fine-tuned to bring it within tens of millions of kilometers from Mars, Venus and Jupiter and be unobservable from Earth at perihelion, along with other unexpected properties. — Hannah Millington, MSNBC Newsweek, 30 Oct. 2025