20
incomprehensible(adjective, obscure, solid, dark, strange)
19
unexplainable(adjective, obscure, strange, explain, explanation)
17
unaccountable(adjective, obscure, solid, extraordinary, superior)
15
mysterious(adjective, hard, obscure, dark, strange)
13
inscrutable(adjective, solid, dark, uncertain, blank)
12
unfathomable(adjective, hard, obscure, difficult, solid)
11
odd(adjective, unusual, strange, explanation, supernatural)
11
peculiar(adjective, unusual, strange, explanation, supernatural)
9
insoluble(adjective, strange, explanation, unable, unfathomable)
9
strange(adjective, extraordinary, unusual, marvelous, amazing)
8
enigmatic(adjective, hard, obscure, rough, solid)
8
extraordinary(adjective, superior, unusual, strange, marvelous)
8
unintelligible(adjective, hard, rough, solid, dark)
7
mystifying(adjective, hard, obscure, delicate, strange)
7
abnormal(adjective, unusual, supernatural, unnatural, uncanny)
7
baffling(adjective, hard, obscure, delicate, solid)
7
mystic(adjective, obscure, solid, strange, mysterious)
7
obscure(adjective, hard, solid, dark, uncertain)
7
puzzling(adjective, hard, dark, strange, uncertain)
6
bizarre(adjective, unusual, strange, supernatural, curious)
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APASmart Define. (2015). inexplicable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/inexplicable/thesaurus/synonyms
ChicagoSmart Define. 2015. "inexplicable thesaurus" https://smartdefine.org/inexplicable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, inexplicable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/inexplicable/thesaurus/synonyms>.
MLASmart Define. "inexplicable thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/inexplicable/thesaurus/synonyms>