Fathomless

//ˈfæ.ðəm.ləs// adj

adj ·Uncommon ·Advanced level

Definitions

Adjective
  1. 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."

  2. 2
    unfathomable or incomprehensible. broadly

Synonyms

All synonyms
abysmalunfathomableabstruseabysmalbottomlesscavernous

Example

More examples

"There are eight gluons. Six--modulo superposition--are sensible color-anticolor color swappers. The other two are fathomless mixtures that can only be described as the remaining linearly independent elements of the group of three-by-three complex unitary matrices with determinant one."

Etymology

From fathom + -less.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.