Closed book
thesaurus
Related words for Closed book
Synonyms
Mystery
noun
Enigma
noun
Secret
noun
Related terms
Perplex
Vex
Stick
Get
Puzzle
Mystify
Baffle
Beat
Pose
Bewilder
Flummox
Stupefy
Nonplus
Gravel
Amaze
Dumbfound
Cryptic
Cryptical
Deep
Inscrutable
Mysterious
Mystifying
Mystic
Mystical
Occult
Secret
Orphic
Enigmatic
Enigmatical
Puzzling
Oracular
