noun which may take the genitive case particle 'no', noun
unconfirmed; undetermined; pending
Describes something that has not yet been decided, confirmed, or settled. Often used in formal or official contexts such as schedules, plans, or statuses.
会議の日程はまだ未確定です。
The meeting schedule is still undetermined.
未確定の情報を公開しないでください。
Please do not release unconfirmed information.
不確定 emphasizes inherent uncertainty or indeterminacy, often in scientific or philosophical contexts, whereas 未確定 focuses on something not yet confirmed or settled.
Compound of 未 (mi, 'not yet') + 確定 (kakutei, 'decision, confirmation'). The word follows a standard Sino-Japanese pattern for expressing an unconfirmed state.