不可(ふか)

ふか
noun/na-adjective
impossible, wrong, not allowed
1. impossible, not possible
Cannot be done or achieved.
不可能(ふかのう)ではない。
It's not impossible.
実現(じつげん)不可(ふか)とされていた計画(けいかく)。
A plan that was considered impossible.
現状(げんじょう)では不可(ふか)だ。
It's not possible in the current situation.
2. wrong, improper
Not acceptable or appropriate.
撮影(さつえい)不可(ふか)。
No photography allowed.
Common sign
持(も)ち込(こ)み不可(ふか)。
No outside items allowed.
飲食(いんしょく)不可(ふか)のエリア。
An area where eating and drinking are not allowed.
3. failing grade
An academic grade indicating failure.
成績(せいせき)が不可(ふか)だった。
The grade was a fail.
試験(しけん)で不可(ふか)を取(と)った。
I got a failing grade on the exam.
不可(ふか)が二(ふた)つあると留年(りゅうねん)する。
If you get two failing grades, you repeat the year.

不可(ふか) is a Sino-Japanese word meaning "not permissible" or "impossible." It functions as both a noun and a na-adjective, and appears frequently in compound words and on signs.

USAGE AS PREFIX:

不可(ふか) attaches to other Sino-Japanese words to form compounds meaning "cannot be ~":

  • 不可能(ふかのう): impossible
  • 不可欠(ふかけつ): indispensable (cannot be lacking)
  • 不可解(ふかかい): incomprehensible
  • 不可避(ふかひ): unavoidable

SIGNS AND NOTICES:

Very common on signs in the pattern 〜不可(ふか) (~ not allowed):

  • 撮影(さつえい)不可(ふか): no photography
  • 持(も)ち込(こ)み不可(ふか): no bringing in outside items
  • 飲食(いんしょく)不可(ふか): no eating or drinking

ACADEMIC GRADING:

In Japanese universities, 不可(ふか) is the failing grade (equivalent to F). The full scale is:

  • 秀(しゅう): A+, 優(ゆう): A, 良(りょう): B, 可(か): C, 不可(ふか): F
general
Added 2026.1.9 21:30 · Revised 2026.3.30 12:38
01500/01922_fuka