155 entries under adjective topic. ×

5
doubtful(uncertain, vague, dubious, mysterious)
5
hidden(cover, hard, evil, obscure)
5
indeterminate(obscure, uncertain, doubtful, vague)
5
knotty(hard, evil, obscure, difficult)
5
problematical(hard, obscure, uncertainty, uncertain)
5
unintelligible(hard, obscure, rough, difficult)
4
Delphic
4
difficult(hard, obscure, dark, strange)
4
fine(exact, discriminating)
4
mystical(hard, knowledge, evil, obscure)
4
sphinxlike(obscure, dark, strange, odd)
4
unknowable(obscure, solid, strange, odd)
4
unreadable(unfathomable, unintelligible, sphinx-like)
3
complicated(hard, evil, obscure, difficult)
3
illegible(unintelligible, unintelligibility)
3
inconceivable
3
involved(hard, obscure, sophisticated, tricky)
3
ulterior(cover, obscure, secret, pertaining)
3
unimaginable
2
amphibological(obscure, rough, difficult, uncertain)
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APASmart Define. (2016). enigmatic thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/enigmatic/thesaurus/synonyms
ChicagoSmart Define. 2016. "enigmatic thesaurus" https://smartdefine.org/enigmatic/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, enigmatic thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/enigmatic/thesaurus/synonyms>.
MLASmart Define. "enigmatic thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/enigmatic/thesaurus/synonyms>