UNFATHOMABLE Synonyms: 99 Similar and Opposite Words

unfathomable

adjective

ˌən-ˈfa-t͟hə-mə-bəl

Definition of unfathomable

as in infinite

being or seeming to be without limits the unfathomable reaches of space

Synonyms & Similar Words

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Antonyms & Near Antonyms

as in incomprehensible

impossible to understand for some unfathomable reason the family decided to venture out into the blizzard

Synonyms & Similar Words

Antonyms & Near Antonyms

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 unfathomable With an unfathomable sense of awareness in everything from feel on the field to relationships, part of what makes him as special off the field as on. — Kansas City Star, 9 Oct. 2026 That might seem almost unfathomable to anyone familiar with the last few years of FSU football, but there's still the lingering questions of Norvell's buyout now coupled with a new AD trying to get his footing in an absolute mess of a situation. — Austin Perry Outkick, FOXNews.com, 29 Sep. 2026 Hasan deftly handles political seriousness and an unfathomable history and present of war and punitive state violence against Palestinians. — Matthew Carey, Deadline, 21 Sep. 2026 Dolphins fandom has been a miserable existence for more than a quarter century now, and for reasons that extend well beyond the unfathomable 25-year playoff victory drought in a league that prioritizes parity. — Barry Jackson, Miami Herald, 20 Sep. 2026 See All Example Sentences for unfathomable

Recent Examples of Synonyms for unfathomable

Adjective

For one thing, social media has gotten far less social since the advent of engagement algorithms and infinite scroll.

— Allison Parshall, Scientific American, 20 Oct. 2026
Christ Jesus revealed the true nature of God as infinite good and the true nature of His children as spiritual, reflecting God’s qualities.

— The Christian Science Monitor, Christian Science Monitor, 19 Oct. 2026

Definition of infinite

Adjective

Stanton’s confession ends up being incomprehensible to anyone but himself—an irony that McCarthy, with his partiality for secret codes, seems to take great pleasure in.

— Max Callimanopulos, New Yorker, 14 Oct. 2026
Sure, the story is incomprehensible, and Dylan is far from a great actor.

— Andy Greene, Rolling Stone, 3 Oct. 2026

Definition of incomprehensible

Adjective

Most of the work of recovery is about treating whatever is causing people to escape their lives into endless scrolling and stimulation, Kardaras says.

— Allison Parshall, Scientific American, 20 Oct. 2026
To help banish the endless procrastination, National Geographic’s 2027 list of 25 must-visit destinations for the year ahead is one of its most timely and experience-driven recommendations yet.

— Maureen O'Hare, CNN Money, 20 Oct. 2026

Definition of endless

Adjective

All the power of the government — investigative, technological, legal — has been thrown at finding these mysterious, diabolically clever ballot baddies.

— Los Angeles Times, Los Angeles Times, 20 Oct. 2026
After all, what better place to reveal the mysterious professor’s identity than in the very magazine responsible for making the fictional detective an international sensation?

— Literary Hub, Literary Hub, 20 Oct. 2026

Definition of mysterious

Adjective

Superposition is an uncanny aspect of quantum mechanics that allows particles to be in multiple states at once—such as literally here and there simultaneously.

— Philipp Strasberg, Scientific American, 20 Oct. 2026
Cops released surveillance photos of the shooter, whose getup bore an uncanny resemblance to the Marvel character Deadpool.

— Julian Roberts-Grmela, New York Daily News, 17 Oct. 2026

Definition of uncanny

Adjective

In fact, it is rooted in the same rhetoric as the black box metaphor, which similarly blurs the complex aspects of AI by framing inner workings as confined and unintelligible.

— Trent Wintermeier, The Conversation, 19 Oct. 2026
Painter expressed concern that paper trail may one day become unintelligible if AI models begin using their own language to track their steps.

— Lisa Eadicicco, CNN Money, 16 Oct. 2026

Definition of unintelligible

Adjective

Berg, working with DP Jacques Jouffret, favors close shots that force us to experience battle much like our heroes do, as confusing, terrifying bursts of mayhem.

— Angie Han, HollywoodReporter, 23 Oct. 2026
However, by creating official federal standards for their color, brightness, and location, NHTSA wants to make sure that any automaker who chooses to add them uses a consistent, legal setup instead of a confusing mix of different colors and signals.

— Andrew J. Hawkins, The Verge, 23 Oct. 2026

Definition of confusing

Adjective

Allow a chess player who’s a nerd to find some references in Wu… Iron Man was kind of esoteric.

— John Kennedy, VIBE.com, 16 Oct. 2026
There’s as much effort gone into the food as there is the drinks menu, and the esoteric array of tropical flavors straddles both impressively.

— Condé Nast, Condé Nast Traveler, 13 Oct. 2026

Definition of esoteric

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unfathered

unfathomable

unfavorable

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“Unfathomable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unfathomable. Accessed 25 Oct. 2026.

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Synonyms of unfathomable

adjective

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