Thesaurus.com
Dictionary.com
Showing results for fathomless.
Definitions

fathomless

[fath-uhm-lis] / ˈfæð əm lɪs /
ADJECTIVE
abysmal
Synonyms
WEAK
bottomless plumbless plummetless
Antonyms
WEAK
infinite low
ADJECTIVE
deep
Synonyms
STRONGEST
broad buried deep-seated far profound rooted wide
STRONG
low submarine underground yawning
WEAK
abysmal abyssal below beneath bottomless distant downreaching immersed inmost subaqueous submerged subterranean sunk unfathomable
Antonyms
WEAK
shallow superficial
ADJECTIVE
incomprehensible
Synonyms
STRONGEST
baffling impenetrable inconceivable mystifying opaque puzzling unfathomable unimaginable unintelligible
WEAK
Delphic beats me beyond comprehension beyond one's grasp clear as mud cryptic enigmatic incognizable inscrutable mysterious obscure over one's head perplexing sibylline unclear ungraspable unknowable
Antonyms
STRONGEST
believable clear comprehensible fathomable imaginable intelligible understandable
ADJECTIVE
profound
Synonyms
STRONGEST
deep
WEAK
abysmal buried cavernous subterranean yawning
Antonyms
WEAK
ignorant mild moderate shallow slight stupid unemotional
ADJECTIVE
uncomprehensible
Synonyms
WEAK
Delphic baffling beats me beyond comprehension beyond one's grasp clear as mud cryptic enigmatic impenetrable incognizable inconceivable inscrutable mysterious mystifying obscure opaque over one's head perplexing puzzling sibylline unclear unfathomable ungraspable unimaginable unintelligible unknowable
ADJECTIVE
unintelligible
Synonyms
STRONGEST
illegible impenetrable incomprehensible indecipherable meaningless opaque unfathomable vague
WEAK
ambiguous equivocal inarticulate incognizable incoherent indistinct inexplicit jumbled muddled obscure tenebrous uncertain unclear unexplicit ungraspable unknowable unreadable
Antonyms
STRONGEST
clear comprehensible decipherable fathomable intelligible understandable
WEAK
meaningful

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Scene by scene, Ms. Alexander deftly conveys the mounting burden of Carol’s exhaustion and fathomless sadness in the face of this.

From The Wall Street Journal • Mar. 26, 2026

The end of the shipping container is open, and I stare into that fathomless black square, listening.

From Slate • Apr. 29, 2023

Whereas our affection for dogs is overly sentimental, resulting in a fathomless ocean of slobbery drool.

From Washington Post • Aug. 6, 2021

The heads of all these characters are as big as beds, with immense gleaming eyes that feel both fathomless and opaque.

From New York Times • Jan. 4, 2018

“Don’t lie to me,” Snape hissed, his fathomless black eyes boring into Harry’s.

From "Harry Potter And The Goblet Of Fire" by J. K. Rowling

Vocabulary lists containing fathomless

Wolf Brother

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

The Suffix -ness, Part 4

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!