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 廃 (hai) originates from a Chinese character meaning "to collapse, abolish, discard." It is classified as a phono-semantic compound (形声文字, keisei moji), combining a semantic and a phonetic component. The semantic component is the "广" (madare) radical, which depicts a wide, sloping roof and signifies a building or structure. The phonetic component is "発" (hatsu/hotsu), which provides the sound "hai" (a Sino-Japanese on'yomi reading) but also contributes meaning. In its original ancient form, "発" depicted a foot stepping away from a vessel, conveying an idea of departure or expulsion. Historically, the character 廃 evolved from the concept of a building falling into ruin or disuse. The core meaning is "to become useless," "to decay," or "to abolish." The "广" radical directly represents the physical structure that has collapsed, while "発" reinforces the notion of something being cast away or departing from its functional state. Over time in China, this concrete meaning of a ruined building was abstracted to apply to systems, laws, and customs, leading to the modern meanings of "obsolete," "abolish," "disuse," and "waste." This character, along with the vast majority of the kanji system, was introduced to Japan in several waves, primarily from the 5th to the 8th centuries via Korean peninsula and through direct cultural exchange with China. It was adopted as part of the writing system to represent the Sino-Japanese vocabulary (on'yomi) that entered the language. An interesting linguistic note is the distinction between 廃 (obsolete, abolished) and the visually similar 発 (to depart, emit). While they share a phonetic component, their core meanings diverged, with 廃 focusing on the negative state of disuse that follows after something has been cast away or has collapsed.