不可解(ふかかい)

ふかかい
na-adjective
mysterious; incomprehensible; puzzling
1. mysterious; incomprehensible; puzzling
Something that cannot be understood or explained, despite efforts to make sense of it.
彼(かれ)の行動(こうどう)は不可解(ふかかい)だ。
His behavior is incomprehensible.
不可解(ふかかい)な事件(じけん)が起(お)きた。
A mysterious incident occurred.
なぜ断(ことわ)ったのか不可解(ふかかい)でならない。
I simply can't understand why they refused.

WORD FORMATION:
不(ふ) (un-, in-) + 可(か) (possible) + 解(かい) (understand)
Literally: "impossible to understand"

FORMS:

  • 不可解(ふかかい)な + noun (incomprehensible ~)
  • 不可解(ふかかい)だ (it's puzzling)

COMMON COLLOCATIONS:

  • 不可解(ふかかい)な行動(こうどう) - incomprehensible behavior
  • 不可解(ふかかい)な事件(じけん) - mysterious incident
  • 不可解(ふかかい)な死(し) - mysterious death

SIMILAR WORDS:

  • 不思議(ふしぎ) - strange, mysterious (more neutral, can be positive)
  • 不可思議(ふかしぎ) - inexplicable (more literary)
  • 謎(なぞ)めいた - enigmatic, mysterious

REGISTER:
Formal to neutral. Often used in news and serious writing.

Related Words

Synonym: 不可思議(ふかしぎ) (literary)
general
Added 2026.1.19 16:22 · Revised 2026.1.24 23:24
07000/07392_fukakai