UNKNOWABLE Synonyms: 126 Similar and Opposite Words

unknowable

adjective

Definition of unknowable

as in ambiguous

not able to be known No matter how far science advances, some things about the world will always remain unknown and unknowable. If passed, this law will have unknowable consequences.

Related Words

Relevance

Dissimilar Words

Example Sentences

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.

Recent Examples of unknowable Faced with something—someone—so ultimately unknowable, perhaps the best that anyone can do is decide on their own version of the truth and stick to it. — Amy Weiss-Meyer, The Atlantic, 10 July 2026 Dark, ancient, kind of unknowable. — Ryan Lattanzio, IndieWire, 18 June 2026 Whether Alphabet exists in 2126 is unknowable and, for a bondholder, almost beside the point. — Dara-Abasi Ita, Forbes.com, 18 June 2026 Widow’s Bay has an admirable relationship with its own lore, veering away from the pure mystery-box approach of treating its secrets as sacred and unknowable. — Kathryn Vanarendonk, Vulture, 17 June 2026 See All Example Sentences for unknowable

Recent Examples of Synonyms for unknowable

Adjective

Unfortunately, who qualifies for the Robinhood Platinum Card is a little ambiguous.

— Ryley Amond, CNBC, 23 July 2026
Many leaders in the late 18th century already considered privateering a morally ambiguous practice, according to Michael Crawford, a former senior historian at the Naval History and Heritage Command.

— Stephen Clark, ArsTechnica, 22 July 2026

Definition of ambiguous

Adjective

The enigmatic, unique Haaland returns to Manchester City in the Premier League under a new manager in a new era, with Enzo Maresca taking over from Pep Guardiola, who managed the team for 10 years and won six Premier League titles.

— Tim Spiers, New York Times, 21 July 2026
The Hunt for Gollum is a standalone feature centered on the enigmatic titular character, portrayed by Serkis in Jackson’s Oscar-winning film trilogy.

— Ryan Coleman, Entertainment Weekly, 16 July 2026

Definition of enigmatic

Adjective

Maybe folks were turning to Spotify to confirm that the Swag II was, in fact, part of Bieber’s discography and not some obscure Christian rock track.

— Maya Georgi, Rolling Stone, 20 July 2026
Their books are weird and beautifully eccentric, and often highlight obscure and experimental writers from the 18th and 19th century.

— Diana Arterian, Literary Hub, 16 July 2026

Definition of obscure

Adjective

Given the uncertain outcomes the Fed needs to think less in terms of linear economic curves and more probabilistically, in which case the potential upside for inflation given an energy price spike could warrant quicker action.

— Justin Zacks, CNBC, 24 July 2026
Still, officials emphasized that the CSU would have to be fiscally disciplined given that the state will have a new governor in January and the state’s budget outlook is uncertain.

— Tarini Mehta, Sacbee.com, 24 July 2026

Definition of uncertain

Adjective

But the ethical waters are murky, and any such project should have high levels of public transparency and accountability, said Lisa Moses, a veterinarian and bioethicist at Harvard Medical School.

— Jessie Yeung, CNN Money, 25 July 2026
Now, though, that rather murky picture is growing a bit clearer.

— Evan Drellich, New York Times, 24 July 2026

Definition of murky

Adjective

Two sources familiar with the matter told CNN over the weekend the uranium enrichment provision includes stipulations imposed by the US, but details of potential limitations are unclear.

— Arpita Dasika, CNN Money, 22 July 2026
Whether Villa only wanted to loan Garnacho anyway is unclear, but there’s an obvious motive for not signing him permanently.

— Chris Weatherspoon, New York Times, 22 July 2026

Definition of unclear

Browse Nearby Words

unknowability

unknowable

unknowing

See all Nearby Words

Cite this Entry

Style

“Unknowable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unknowable. Accessed 26 Jul. 2026.

Copy Citation

Synonyms of unknowable

adjective

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster on unknowable

More from Merriam-Webster

Word of the Day

aerie

Popular in Grammar & Usage

Democracy or Republic: What's the difference?

Merriam-Webster’s Great Big List of Words You Love to Hate

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Do you 'say your piece' or 'say your peace'?

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

It's a Scorcher! Words for the Summer Heat

The Longest Long Words List

Ten Words Ending with a Silent ‘T’

The Words of the Week - Jul 24

Why do we say 'fly off the handle'?

Popular

Democracy or Republic: What's the difference?

It's a Scorcher! Words for the Summer Heat

The Longest Long Words List

Games & Quizzes