 closed_book |
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| 1. | [ noun ] something that baffles understanding and cannot be explained | |
| Synonyms: | mystery enigma secret | |
| Examples: | "how it got out is a mystery" "it remains one of nature's secrets" |
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| Related terms: | perplexity perplex | |
| Similar spelling: |
closed_loop closedown closed_in closed-door closed_shop cluster_bomb closed_curve closed_chain close_to clustered |
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