Explore each form from the oldest known stage to today.
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The kanji "訳" (yaku/wake) is a phono-semantic compound (形声文字) formed from the semantic component "言" (words, speech) and the phonetic component "睪" (eki), which also carried its own semantic meaning. The original ancient form of the phonetic "睪" depicted an eye (目) over a vertical line, representing a person being watched or scrutinized by an authority. This evolved to signify the act of judging, discerning, or investigating the truth. Historically in China, "訳" initially meant "to clarify" or "to judge the truth." This core meaning of discerning and explaining the facts naturally branched into its two primary modern definitions: "reason" (wake), which is the logical explanation or cause behind something, and "translation" (yaku), which is the act of clarifying meaning from one language to another. The character was part of the great wave of kanji imported to Japan from China, primarily from the 5th to 8th centuries AD, via Korean scholars and Japanese missions to the Chinese court, arriving with its Chinese readings (on'yomi) and core meanings intact. An interesting linguistic note is the semantic connection between the two meanings. The Japanese word for reason, "理由" (riyū), uses a different character for "reason," but the native Japanese reading "wake" for "訳" retains the original sense of "a reasoned account" or "an explanation." This demonstrates how the kanji was mapped onto a pre-existing Japanese concept. The use of "訳" for "translation" is a uniquely Japanese development, solidifying the idea that translation is fundamentally an act of explaining and clarifying the meaning of words.