気きが知しれない

expression, i-adjective

can't understand (someone's) mind; unable to fathom (reason/motive)

Used when one cannot comprehend another person's thoughts, feelings, or motives. Often carries a nuance of bewilderment or suspicion.

• 彼かれがなぜそんなことをしたのか、まったく気きが知しれない。

  I really can't understand why he did such a thing.

• あの人ひとの考かんがえていることは気きが知しれない。

  I can't fathom what that person is thinking.