Definitions
hidden; hide
Etymology
About
The character 閟 is built around the door radical 门, placing it in the semantic domain of entrances, barriers, and enclosures. Inside, the phonetic component 必 determines the pronunciation without contributing to the meaning. Historically, it signifies shutting firmly, closing off, or barricading a passage, and by extension describes being hidden, secluded, or deeply concealed. This semantic trajectory moves from a physical door barrier to the abstract concepts of secrecy, isolation, and complete inaccessibility.
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