Synonyms|106Antonyms|66|Broader|3Narrower|0Related|688
6
unfathomable(adjective, hard, difficult, limited, bottomless)
3
incomprehensible(adjective, understandable)
3
inscrutable(adjective, clear)
2
bottomless(adjective, deep)
2
esoteric
2
fathomless
2
limitless(adjective, limited, little)
1
abysmal
1
boundless
1
cryptic
1
deep
1
enigmatic
1
impenetrable
1
inconceivable(adjective, reasonable, belief, imaginable)
1
infinite
1
mysterious
1
obscure
1
profound
1
recondite
1
unintelligible
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APASmart Define. (2016). fathomable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/fathomable/thesaurus/antonyms
ChicagoSmart Define. 2016. "fathomable thesaurus" https://smartdefine.org/fathomable/thesaurus/antonyms (accessed September 20, 2026).
HarvardSmart Define 2016, fathomable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/fathomable/thesaurus/antonyms>.
MLASmart Define. "fathomable thesaurus" 31 March 2016. Web. 20 September 2026. <https://smartdefine.org/fathomable/thesaurus/antonyms>