noun which may take the genitive case particle 'no', noun
unknown; unidentified; not yet clarified
Formal, often used in academic or official contexts to indicate that details are not yet known or confirmed.
その遺跡の用途は未詳である。
The purpose of the ruins is unknown.
未詳の点が多い研究だ。
It is a study with many unidentified points.
未詳 is a formal term meaning 'details unknown', typically used for authorship or origins, whereas 未知 is broader and covers anything not yet known or explored.
anonymous; of unknown authorship
Compound of 未 (mi, 'not yet') and 詳 (shō, 'detailed'). The reading みしょう is the on'yomi of both characters.