The word 遗憾 is formed by combining the character 遗, meaning "to leave behind" or "to lose", with 憾, meaning "regret". 遗 consists of the radical 辶, associated with movement, and 貴, indicating value, while 憾 includes the heart radical 忄, denoting emotion, and 感, meaning feeling; together, they create a compound where the sense of loss from 遗 and the emotional disappointment from 憾 converge to express regret.