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fathomless

American  
[fath-uhm-lis] / ˈfæð əm lɪs /

adjective

  1. impossible to measure the depth of; bottomless.

  2. impossible to understand; incomprehensible.

    fathomless motives.
fathomless British  
/ ˈfæðəmlɪs /

adjective

  1. another word for unfathomable

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • fathomlessly adverb
  • fathomlessness noun

Etymology

Origin of fathomless

First recorded in 1600–10; fathom + -less

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.