noun
manager; administrator; supervisor
General term for a person who manages or administers something, such as a facility, system, or organization. Can also refer to a landlord or warden in specific contexts.
彼はこのビルの管理者です。
He is the manager of this building.
システム管理者に問い合わせてください。
Please contact the system administrator.
noun
root user; superuser
Computing term for the highest-privilege user account, often called 'root' in Unix-like systems.
管理者権限でコマンドを実行してください。
Please run the command with administrator privileges.
責任者 emphasizes responsibility and accountability, often for a specific task or project, whereas 管理者 focuses on ongoing management or administration.
Compound of 管理 (kanri, 'management') + 者 (sha, 'person').