noun, noun which may take the genitive case particle 'no'
Used for works, projects, or collections that are not yet complete. Often appears in titles or descriptions of serialized works.
この小説は未完のまま作者が亡くなった。
The author passed away leaving this novel unfinished.
全集は未完に終わった。
The complete works remained incomplete.
未完 means 'unfinished' or 'incomplete', the direct opposite of 完了's sense of a task being fully completed.
未完 describes a work or process left unfinished, the opposite of 完結, which describes it reaching its final conclusion.
incomplete; unfinished · imperfect (grammar)
Standard kanji form; the word is almost always written in kanji.
Compound of 未 (mi, 'not yet') and 完 (kan, 'complete'). The reading is on'yomi.