The word 乱叫 is formed by combining the character 乱 (luàn), meaning "chaotic" or "disorderly", with the character 叫 (jiào), meaning "to shout" or "to call". In this construction, 乱 functions as an adverbial modifier describing the manner of the action expressed by 叫, resulting in a compound verb that literally means "to shout chaotically" or "to make disorderly noises".