also: ないじ
noun
internal affairs; domestic affairs
Refers to matters within a country, as opposed to foreign affairs. Often used in political or administrative contexts.
内治に力を入れるべきだ。
We should focus on domestic affairs.
外患よりも内治の方が優先される。
Internal affairs take priority over external threats.
Compound of 内 (inside, internal) and 治 (govern, rule). The exact historical derivation is uncertain, but the word is used in formal contexts to refer to domestic governance.