Definition of Closed book

1. Noun. Something that baffles understanding and cannot be explained. "It remains one of nature's secrets"

Exact synonyms: Enigma, Mystery, Secret
Generic synonyms: Perplexity
Derivative terms: Enigmatic, Enigmatic, Enigmatical, Mysterious, Mysterious, Mystify, Mystify

Lexicographical Neighbors of Closed Book

closed-circuit
closed-circuit television
closed-class word
closed-door
closed-end fund
closed-end investment company
closed-heart surgery
closed-loop obstruction
closed-loop system
closed-minded
closed-ring
closedown
closedowns
closed anaesthesia
closed bite
closed book (current term)
closed chain
closed chain compound
closed chest massage
closed circle
closed circuit
closed circuit method
closed comedo
closed corporation
closed couplet
closed curve
closed dislocation
closed drainage
closed fracture
closed fracture

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