Explore each form from the oldest known stage to today.
The character 臭 is a compound ideograph (会意) formed from the combination of two simpler characters: 自 (nose) and 犬 (dog). Its original meaning in ancient Chinese script was "to smell" or "to sniff out," representing a dog using its keen sense of smell. The conceptual formation is that of a dog (犬) with its nose (自), emphasizing the act of detecting an odor. This original sense is preserved in the modern Japanese verb 嗅ぐ (kagu), meaning "to smell." Historically, the character's meaning underwent a significant semantic shift from the neutral act of smelling to the quality of the odor itself, specifically a foul one. This evolution is a common linguistic phenomenon where a verb associated with a sense becomes associated with the stimulus. The character was standardized into its current form during the clerical script (隷書) transformation in China, which solidified the structure of 自 over 犬. It was imported to Japan along with the bulk of the Chinese writing system, most authoritatively during the Nara and Heian periods via Buddhist texts and classical Chinese literature. A key linguistic note is the relationship between the character 臭 and its two primary Japanese readings. The on'yomi (Chinese-derived reading) シュウ (shū) is used in compounds like 悪臭 (akushū, "stench"). The kun'yomi (Japanese reading) くさい (kusai) is the adjective for "stinky." Furthermore, the original meaning of "to smell" is retained in the verb 嗅ぐ, which uses 臭 as its phonetic component in its older form 嗅. This character exemplifies how a single graphical form can encapsulate a complete semantic shift from an action to a sensory property.