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闿 is a phono-semantic compound. Its semantic component is the radical 门 (門 in traditional form 闓), which relates to doors or gates. Its phonetic component is 岂 (豈 traditionally), which suggests the pronunciation and also subtly reinforces the architectural context. The character's primary meaning is the physical act of opening a door or gate. This concrete action later developed metaphorical extensions, coming to describe states of emotional openness, joyousness, and clarity. Today, 闿 is found mostly in classical texts and formal names rather than in everyday language.