知しったことではないMeanings1expressionnone of my business; doesn't concern me; nothing to do with meA blunt, dismissive expression used to disclaim involvement or responsibility. Often carries a cold or indifferent tone.彼かれが何なにをしようと、私わたしの知しったことではない。Whatever he does is none of my business.そんな話はなしは私わたしの知しったことではない。That story doesn't concern me at all.
