mysterious

Synonyms: abstruse alchemistic arcane astrological baffling cabalistic covert cryptic curious dark difficult enigmatic enigmatical equivocal esoteric furtive hidden impenetrable incomprehensible inexplicable inscrutable insoluble magical mystical mystifying necromantic obscure occult oracular perplexing puzzling recondite secretive sphinxlike spiritual strange subjective symbolic transcendental uncanny unfathomable unknowable unknown unnatural veiled weird

Antonyms: apparent known obvious plain public straightforward tangible unmysterious