Explore each form from the oldest known stage to today.
Historical forms are not available yet. The current form is shown as a reference.
The kanji 挿 is a phono-semantic compound (形声文字) formed during the Shuowen Jiezi era in China. Its semantic component is the hand radical (扌/手), indicating an action performed with the hand. The phonetic component is 甾 (さい/sai), which originally depicted a woven bag or a tool for sifting, but in this context, its primary function was to provide the "sō" sound. The core meaning of inserting or thrusting into comes from the combination of the "hand" action and this specific phonetic. Historically, the character 挿 evolved from ancient forms found on bronze inscriptions. The original phonetic element 甾 was sometimes simplified or confused with the similar-looking 干 in clerical script (隷書), leading to the modern form 挿. This clerical script transformation standardized the character, which was then passed down through the Kaishu (regular script) used in Chinese texts. The character was imported to Japan in waves, primarily through the introduction of Chinese written classics such as Buddhist sutras and Confucian texts during the Asuka and Nara periods (6th to 8th centuries). It was adopted into the Japanese writing system as a standard kanji for the concept of insertion. An interesting linguistic note is the Japanese kun'yomi "sa.su," which is a native Japanese word meaning "to insert, pierce, or stab." This verb predates the arrival of the kanji, and 挿 was selected as its logographic representation due to the perfect match in meaning. This created a situation where the character is used for a native Japanese word, while its on'yomi "sō" is reserved for compound words of Chinese origin, such as 挿入 (sōnyū - insertion) or 挿絵 (sashie - illustration, using the kun'yomi). This demonstrates the typical Japanese practice of assigning a semantically fitting kanji to a pre-existing native verb.