Explore each form from the oldest known stage to today.
Historical forms are not available yet. The current form is shown as a reference.
"秘" is a phono-semantic compound character, formed by combining a semantic and a phonetic component. The character is a variant of the original kanji "祕". The left component, 示 (shimesu), is the "altar" or "spirit" radical, indicating that the character's original meaning was related to the spiritual or divine. The right component, 必 (hitsu), primarily functions as a phonetic marker to suggest the pronunciation, but it also carries a connotative meaning of "certain" or "sure," which implies something fixed and hidden from view. Historically, "祕" in ancient China depicted something profound, mysterious, and concealed, particularly in a religious context—such as secret rituals or esoteric knowledge of the gods that was not accessible to the uninitiated. Over time in China, the character underwent simplification; the complex altar radical 示 was sometimes replaced with the simpler "rice" radical 禾, leading to the variant form "秘". This form was easier to write and became standard. The core meaning evolved from "divinely hidden" to the more general concept of "secret" or "concealed." This kanji, in its "祕" form, was introduced to Japan via Korea between the 5th and 6th centuries AD, as part of the broader transmission of Chinese writing and Buddhism. The Japanese adopted both forms, but "秘" eventually became the standard and common-use (jōyō) form in modern Japanese, while "祕" is now considered a kyūjitai (old character form). A key cultural note is its use in "秘伝" (hiden), meaning "secret tradition," a concept deeply rooted in Japanese arts and martial arts, where knowledge is passed down only to selected initiates, preserving the original connotation of esoteric knowledge withheld from the public.