Explore each form from the oldest known stage to today.
The character 咳 (ké/cough) evolved from ancient pictographs depicting a person with an open mouth and respiratory symptoms. In Liushutong, L21096 shows an early form combining 口 (mouth) with 亥 (which provides phonetic value but also carries connotations of obstruction or difficulty). The character originally represented the sound and action of coughing, later extending to mean coughing as a symptom. Over time, the composition stabilized into the modern form with 口 indicating the mouth/oral aspect and 亥 serving primarily as phonetic component. Arrived in Japan: The character 咳 likely arrived in Japan during the 5th-6th centuries CE along with the broader introduction of Chinese writing systems, medical texts, and Buddhist scriptures. It was incorporated into Japanese as 'seki' (咳) in the context of medical terminology and common vocabulary, appearing in early Japanese medical works like the 'Ishinpō' (984 CE) which compiled Chinese medical knowledge.