noun which may take the genitive case particle 'no', na-adjective, noun
undecided; not yet fixed; pending
Used for schedules, plans, details, or decisions that are still open or unconfirmed. Often appears in formal announcements, itineraries, and business contexts. Antonym: 既定 (already decided).
Antonyms: 既定
会議の日程はまだ未定です。
The meeting date is still undecided.
詳細は未定ですが、来月には発表できると思います。
The details are not yet fixed, but I think we can announce them next month.