noun, na-adjective
irresponsibility; irresponsible
Used both as a noun and as a な-adjective to describe a person, action, or attitude that lacks a sense of responsibility or accountability.
彼の無責任な態度には本当に腹が立つ。
His irresponsible attitude really makes me angry.
そんな無責
Such an irresponsible remark is unacceptable.