irresponsible
Review kanji at the right time with spaced repetition, remember more for longer, and track your progress.
彼の説明はいい加減だった。
His explanation was careless / sloppy.
いい加減な仕事は困ります。
Careless work is a problem.
もういい加減、答えを出そう。
It is about time we came to an answer.