不確定(ふかくてい)

ふかくてい
noun, na-adjective
uncertain; undetermined; indefinite
abstract
1. uncertain; undetermined; indefinite
Not yet decided or established; remaining unknown or variable.
日程(にってい)はまだ不確定(ふかくてい)だ。
The schedule is still undetermined.
不確定(ふかくてい)な要素(ようそ)が多(おお)くて計画(けいかく)が立(た)てにくい。
There are too many uncertain factors to make a plan.
将来(しょうらい)の収入(しゅうにゅう)が不確定(ふかくてい)なため、大(おお)きな買(か)い物(もの)は控(ひか)えている。
Because my future income is uncertain, I'm holding off on major purchases.

A Sino-Japanese compound (不(ふ) negative + 確定(かくてい) definite/fixed) used in formal and semi-formal contexts. It describes situations, facts, or quantities that have not been settled or cannot be predicted.

Common collocations

Similar words

  • 不確(ふたし)か — uncertain, vague; more subjective and colloquial, often about personal impressions or memory
  • 未定(みてい) — undecided; specifically means a decision has not yet been made, while 不確定(ふかくてい) is broader and can mean inherently unknowable
  • 曖昧(あいまい) — ambiguous, vague; focuses on lack of clarity rather than lack of determination

Related Words

Compare: 不確(ふたし)か (uncertain, vague)
Compare: 未定(みてい) (undecided)
Compare: 曖昧(あいまい) (ambiguous, vague)
Compare: 未知数(みちすう) (unknown quantity)
Compare: 不定(ふてい) (indefinite)
general
Added 2026.4.18 22:13 · Revised 2026.9.2 13:02
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