noun
uncompleted; unfinished; crude
Describes something that is not yet finished or is in a rough, undeveloped state. Often used in formal or written contexts.
その計画はまだ未成の段階だ。
The plan is still at an unfinished stage.
未成の作品を公開するのは気が引ける。
I'm hesitant to show an uncompleted work.