Synonyms for closed book
Definitions
- n. 1
A person or thing that cannot be easily understood; someone or something incomprehensible or puzzling.
Example sentences
- secret Tom happened to let out the secret to his friends.
- mystery The mystery story is so hard that I don't like it.
- enigma It's a riddle wrapped in a mystery inside an enigma.
By length
- 6 letters
- secret2, enigma3
- 7 letters
- mystery3
The small number after each word is its number of syllables (secret2 = 2 syllables).