outside an organization; external
Used to indicate something or someone is not part of a particular group, department, or organization. Often appears in compounds like 部外者 (outsider) or 部外秘 (confidential).
Entry by outsiders is prohibited.
This document is confidential (not to be disclosed to outsiders).
You must not leak the contents of the meeting to outsiders.
People outside the department are not allowed into this area.
部内 means inside the department or organization, while 部外 means outside it.
Compound of 部 (department, section) and 外 (outside).