/ˈʌndəwɜːld/ – noun
Definition: thế giới tội phạm, thế giới ngầm, tình trạng phạm tội có tội chức.
A more thorough explanation: The term “underworld” typically refers to the criminal or illegal activities and organizations that operate outside of the law. It can include organized crime groups, illegal enterprises, and other illicit activities.
Example: The police conducted a raid on a suspected underworld figure’s mansion, uncovering a large cache of illegal weapons and drugs.