Synonyms of fathomless

fathomless

adjective

ˈfa-t͟həm-ləs 

as in infinite

being or seeming to be without limits

impresses everyone with her fathomless knowledge of wildcats

Synonyms & Similar Words

• infinite
• endless
• boundless
• vast
• measureless
• limitless
• illimitable
• immeasurable
• unfathomable
• unlimited
• unbounded
• bottomless
• horizonless
• immense
• indefinite
• extensive
• immensurable
• inexhaustible
• incalculable
• unmeasured
• innumerable
• countless
• inestimable
• abysmal
• exhaustless
• incomputable
• far-flung

Antonyms & Near Antonyms

• limited
• confined
• finite
• definite
• restricted
• bounded
• circumscribed
• measurable
• shallow
• superficial
• fathomable
• depthless

Example Sentences

Recent Examples of fathomless

This snowballing controversy over seemingly simple pieces of paper launched endless online arguments, dominated the news cycle, and gradually began to serve as a microcosm of the fathomless ideological rift among Americans, many of whom view the Israeli-Palestinian conflict as a zero sum game. — Josh Weiss, Forbes.com, 8 Sep. 2025

Glaciers of the Pleistocene epoch, which retreated about 14,000 years ago, left behind the rolling landscape of craggy granite peaks, sloping valleys, and fathomless lakes. — Alex Tzelnic, Outside Online, 6 June 2025

Their relationship climaxes with a verbal showdown late in the season that is almost unbearable to watch, as Sanada and Nishioka summon the fathomless love and respect underlying the confrontation. — Kristen Baldwin, EW.com, 27 Feb. 2024

The government’s sporadic but incessant updating of agency rules and procedures have done little to stymie routine abuses of the 702 data—which is currently fathomless. — WIRED, 7 Nov. 2023