The word 捣蛋鬼 is formed by combining the verb phrase 捣蛋, meaning 'to cause trouble' or 'to play pranks,' with the noun 鬼, which denotes a person with a specific trait. Here, 捣 means 'to stir' or 'disturb,' and 蛋 means 'egg,' but together 捣蛋 functions idiomatically for mischievous acts. Adding 鬼 as a suffix transforms the action into a noun referring to a person who habitually engages in such behavior, thus creating the term for a troublemaker.