Thoughtlessness or indiscretion; acting without proper consideration or judgment.
彼の無分別な発言がネットで批判を浴びた。
His thoughtless remarks were criticized on the internet.
無分別に行動すると取り返しのつかないことになる。
If you act indiscriminately, it can lead to irreparable consequences.
親は子どもの無分別さを見守りつつ、少しずつ教えるべきだ。
Parents should watch over a child's indiscretion and teach them gradually.