1
unsoundable
0
abstruse
0
ambiguous
0
arcane
0
deep in thought
0
delphic
0
double-edged
0
elliptical
0
endless
0
enormous
0
equivocal
0
eternal
0
fuzzy
0
illimitable
0
imcomprehensible(reasonable, common)
0
immeasurable
0
inapprehensible
0
inarticulate
0
incalculable
0
incogitable(reasonable, common)
10 years ago|918 views|share |citing 
APASmart Define. (2016). fathomable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fathomable/thesaurus/antonyms
ChicagoSmart Define. 2016. "fathomable thesaurus" https://smartdefine.org/fathomable/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2016, fathomable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fathomable/thesaurus/antonyms>.
MLASmart Define. "fathomable thesaurus" 31 March 2016. Web. 21 September 2026. <https://smartdefine.org/fathomable/thesaurus/antonyms>