undocumented

Adjective

not-comparable of a person

Lacking instructions or reference material. / Not having official documents that provide identification, authorization, etc.

Japanese Meaning

文書化されていない、公式な書類のない / 指示書や参照資料が欠如している状態

The developer struggled to integrate the undocumented library without any reference materials.

開発者は、ドキュメントや参考資料がないライブラリを統合するのに苦労した。

Sense（1）

Lacking instructions or reference material.

Undocumented software can be very difficult to learn to use.

Sense（2）

Not having official documents that provide identification, authorization, etc.

Sense（3）

(of a person) Not having official documentation required to legally enter, reside in, or work in a country.