2
undisclosed(cover, obscure, dark, equivocal, ulterior)
2
undiscoverable(adjective, hidden, unfathomable, incomprehensible, sphinx-like)
2
undivulged(cover, obscure, dark, equivocal, ulterior)
2
unexplainable(adjective, obscure, strange, odd, mysterious)
2
unfamiliar
2
vacillating
1
Byzantine
1
Delphian(adjective, evil, obscure, deep, mysterious)
1
Gordian
1
able
1
amphibolous
1
arguable(uncertain, doubtful, dubious, tricky, sticky)
1
backstairs(mysterious, private, reticent, taciturn, covert)
1
beguiling
1
beyond comprehension
1
bizarre
1
bothering
1
buttoned up(expression, mysterious, private, reticent, taciturn)
1
cabbalistic
1
censored
10 years ago|14k views|share |citing 
APASmart Define. (2016). enigmatic thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/enigmatic/thesaurus/synonyms
ChicagoSmart Define. 2016. "enigmatic thesaurus" https://smartdefine.org/enigmatic/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, enigmatic thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/enigmatic/thesaurus/synonyms>.
MLASmart Define. "enigmatic thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/enigmatic/thesaurus/synonyms>