未定

みてい

not yet fixed, undecided, pending

JLPT N1

Character Breakdown

Meaning and Usage

"未定" (みてい) means "not yet fixed" or "undecided." It is commonly used in formal and everyday contexts to indicate that a decision or arrangement has not been finalized.

Common Contexts

You will often see "未定" used for schedules, dates, plans, or details that are still pending. For example, meeting dates, event times, or product release dates can be described as "未定" when they have not been set.

Collocations and Patterns

  • 未定のまま (undecided as is): used when something remains undecided without change.
  • 日程が未定 (schedule is undecided): very common for meetings or events.
  • 発売日が未定 (release date is undecided): used in product announcements.

Register and Nuance

"未定" is neutral and can be used in both formal and informal situations. It conveys a factual state without implying delay or problem, just that the decision is pending.

Common Mistake

Learners sometimes confuse "未定" with "未定義" (undefined) or other similar words. Remember "未定" specifically refers to something not yet decided or fixed, often about plans or schedules.

Example Sentences

かいぎのにっていはまだみていです。

The schedule for the meeting is still undecided.

しょうひんのはつばいびはみていですが、らいげつになるよていです。

The product release date is undecided, but it is expected to be next month.

りょこうのけいかくはみていなので、きまりしだいれんらくします。

The travel plans are undecided, so I will contact you as soon as they are fixed.