Explore each form from the oldest known stage to today.
The kanji 倒 is a phono-semantic compound, formed during the era of Small Seal Script in China. Its semantic component is 人 (the "person" radical, often written as 亻on the left), which indicates the character's meaning is related to a human action or state. The phonetic component is 到, which means "to arrive." The character 到 itself is composed of 至 (to arrive) and 刀 (knife, also acting as a phonetic element). The original idea conveyed by 倒 is a person "arriving" in a horizontal or prostrate position, hence the core meanings of "to fall," "collapse," or "to overthrow." Historically, the character evolved from its clerical script form into the modern standard 倒. It was not originally a pictograph but an abstract ideographic construction that uses one character (到) to suggest the sound and another (人) to categorize the meaning. This character, along with the vast majority of the kanji system, was introduced to Japan in waves, primarily through the importation of Chinese texts like the *Kojiki* and *Nihon Shoki* in the Nara period (8th century CE). It was adopted into the Japanese writing system as a regular-use kanji. A key linguistic note is the interplay between its two main readings. The *on'yomi* (Sino-Japanese reading) "トウ" comes from the Chinese pronunciation of the phonetic component 到. The *kun'yomi* (Japanese reading) "たお-れる" (to collapse) and "たお-す" (to overthrow) are native Japanese words assigned to the character based on its meaning. This character perfectly illustrates the principle of 会意形声 (a compound ideographic and phonetic character), where the components work together to create a new, specific concept—the act of causing a person or thing to fall.