noun
internal affairs; domestic affairs
Refers to matters within a country or organization, especially in political or administrative contexts. Often used in compound terms like 内務省 (Ministry of Home Affairs).
内務省は国内の治安維持を担当している。
The Ministry of Home Affairs is responsible for maintaining domestic security.
彼は会社の内務を一手に引き受け
He handles all the company's internal affairs single-handedly.