Synonyms|118Antonyms|31|Broader|1Narrower|8Related|137
3
unexplained
3
unsustainable(adjective, defended, verbal attack)
2
arcane(adjective, difficult, strange, hidden, unfathomable)
2
extraordinary(adjective, strange, unfathomable, puzzling)
2
indecipherable(adjective, unfathomable, enigmatic, inexplicable, sphinx-like)
2
insoluble(adjective, inexplicable)
2
magical
2
obscure(adjective, inexplicable)
2
preternatural
1
absurd(adjective, defended, verbal attack)
1
astonishing(adjective, strange, unfathomable, puzzling)
1
bizarre
1
cryptic
1
extreme(adjective, defended, verbal attack)
1
fabulous
1
fantastic
1
groundless(adjective, defended, verbal attack)
1
illogical(adjective, defended, verbal attack)
1
indefensible(adjective, defended, verbal attack)
1
indefinable
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APASmart Define. (2015). unexplainable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unexplainable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unexplainable thesaurus" https://smartdefine.org/unexplainable/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, unexplainable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unexplainable/thesaurus/synonyms>.
MLASmart Define. "unexplainable thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/unexplainable/thesaurus/synonyms>