fathomless

F4A1T1H4O1M3L1E1S1S1
US/ˈfæ.ðəm.ləs/US/ˈfæ.ðəm.lɪs/

adjective

Very deep (especially of water deeper than a lead line can measure); bottomless, immeasurable.

UncommonScrabble 18

Meanings

adjectivefathomless (comparative more fathomless, superlative most fathomless)

comparative more fathomless · superlative most fathomless

  1. Very deep (especially of water deeper than a lead line can measure); bottomless, immeasurable.

    Prais’d be the fathomless universe, / For life and joy, and for objects and knowledge curious, / And for love, sweet love—but praise! praise! praise! / For the sure-enwinding arms of cool-enfolding death.

    1865, Walt Whitman, “When Lilacs Last in the Dooryard Bloom’d”, in Sequel to Drum-Taps: When Lilacs Last in the Dooryard Bloom’d and other poems

    Synonyms: soundless

Synonyms & antonyms

adjectiveVery deep (especially of water deeper than a lead line can measure); bottomless, immeasurable.

Similar

adjectiveunfathomable or incomprehensible.

Similar

Origin

  1. Englishfathom
  2. Proto-Indo-European*lewh₁-
  3. Proto-Indo-European*lewHs-
  4. Proto-Germanic*leusaną
  5. Proto-Germanic*lausaz
  6. Englishfathomless

From fathom + -less.

Full word history & related roots →

Translations

Bulgarian неразбираем, бездънен
  • неразбираем (nerazbiraem)unfathomable or incomprehensible
  • бездънен (bezdănen)bottomless
  • неизмерим (neizmerim)bottomless
Dutch ondoorgrondelijk, onbegrijpelijk
  • ondoorgrondelijkunfathomable or incomprehensible
  • onbegrijpelijkunfathomable or incomprehensible
  • bodemloosbottomless
Esperanto senfunda
  • senfundabottomless
French sans fond
  • sans fondbottomless
Cite this entry
APA

fathomless. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/fathomless

MLA

“fathomless.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fathomless. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “fathomless,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/fathomless.

Source: fathomless on Wiktionary, CC BY-SA 4.0.