The word 残暴 is formed by combining the character 残, meaning "cruel" or "brutal", with the character 暴, meaning "violent" or "fierce". 残 uses the radical 歹, which relates to harm or death, contributing its sense of brutality, while 暴, historically associated with sudden or intense force, adds the notion of violence. Their meanings merge to create a compound term emphasizing severe cruelty and aggression.