不確実(ふかくじつ)

ふかくじつ
na-adjective
uncertain; unreliable; indefinite
1. uncertain; unreliable; indefinite
Not definite or reliable; lacking certainty. Used for situations, information, or outcomes that cannot be predicted or depended upon with confidence.
情報(じょうほう)は不確実(ふかくじつ)だ。
The information is unreliable.
不確実(ふかくじつ)な時代(じだい)に備(そな)えて貯金(ちょきん)をしている。
I'm saving money in preparation for uncertain times.
不確実(ふかくじつ)な情報(じょうほう)に基(もと)づいて判断(はんだん)するのは危険(きけん)だ。
It is dangerous to make judgments based on unreliable information.

USAGE:
Used as a na-adjective (不確実(ふかくじつ)な) and as a noun (不確実(ふかくじつ)性(せい) — uncertainty). Common in business, economics, and academic writing.

COMMON COLLOCATIONS:

  • 不確実(ふかくじつ)性(せい) (uncertainty)
  • 不確実(ふかくじつ)な情報(じょうほう) (unreliable information)
  • 不確実(ふかくじつ)な時代(じだい) (uncertain times)
  • 不確実(ふかくじつ)要素(ようそ) (element of uncertainty)

SIMILAR WORDS:
不確か(ふたしか) is a more everyday word for "uncertain" or "vague," while 不確実(ふかくじつ) is more formal and analytical.

Related Words

Antonym: 確実(かくじつ) (certain, reliable)
general
Added 2026.3.8 17:51 · Revised 2026.4.6 12:23
15500/15727_fukakujitsu