フカカイ
Meanings
Adjective (な)
Noun
1. incomprehensible; mysterious; inexplicable; inscrutable; enigmatic; baffling
Pitch accent
カイ
Composed of
wrong; bad; not allowed; not possible; failing grade
solution (of an equation, inequality, etc.); root (e.g. of a polynomial); solution (to a given problem); answer; explanation; interpretation
Examples (3 in total)
The disappearances in the Bermuda Triangle are inexplicable.
Do you remember that baffling murder case?
The doctor is trying to solve many of the riddles of cancer.