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The kanji "謎" is a phono-semantic compound character, formed during the development of Chinese script. Its semantic component is 言 (gen/koto, "word," "speech"), which categorizes the character's meaning as related to language or communication. The phonetic component is 迷 (mei, "to be lost," "to be perplexed"). This combination creates the meaning of "words that cause one to be lost or perplexed," which perfectly encapsulates the concept of a riddle. Historically, "謎" is not found in the earliest Chinese dictionaries like the Shuowen Jiezi, indicating it was created later to represent a specific spoken word. It is a product of the clerical script (隷書) transition and was standardized in the regular script (楷書). The character's formation relies entirely on its component parts to convey its abstract meaning, as it is neither pictographic nor a simple ideograph. The sound-meaning relationship is key; 迷 (mei) provides both an approximate pronunciation and a core conceptual idea of confusion. The character, along with the vast majority of the Japanese writing system, was imported from China, most likely during the Yamato period through the Korean peninsula and subsequent direct missions to the Tang court. It entered Japan as part of the cultural wave that brought Chinese literature, Buddhism, and bureaucracy. An interesting linguistic note is that while the Chinese reading (on'yomi) is "mei," the native Japanese reading (kun'yomi) is "nazo." This reflects the process where a pre-existing Japanese word for "riddle" (nazo) was assigned to the imported Chinese character that had the closest meaning, a common practice in the adoption of kanji.