/ˈduːə/ – noun
Definition: người hành động, người thực hiện, chủ thể của hành vi.
A more thorough explanation: A “doer” is a person who performs or executes an action, task, or activity. In legal terms, a doer is someone who carries out a specific act or deed, often in the context of a legal proceeding or contractual obligation.
Example: The doer of the crime was apprehended by law enforcement officers.