inscrutable Synonyms
mysterious
cryptical
deep
cryptic
mystifying
unexpressive
telestic
unsearchable
sibylline
wildering
unaccountable
secret
mystic
mystical
obscure
occult
opaque
perplexing
puzzling
recondite
wooden
unintelligible
unfathomable
unfathomed
unexplained
uncomprehensible
unanalyzable
straight-faced
sphinxlike
unsolvable
unexplainable
poker-faced
deadpan
unreadable
unmodulated
unbridgeable
unknowable
qabalistic
kabbalistic
unsoundable
mysterial
investigable
enigmatical
enigmatic
difficult
delphic
delphian
dark
complex
cabalistic