to not meet expectations or complete a task successfully
期待に応えられなかったり、タスクを成功裏に完了できなかったりすること (kitai ni kotaerarenakattari, tasuku o seikōri ni kanryō dekinakattari suru koto)
"The company promised improvements but failed to deliver on its promises."
"会社は改善を約束しましたが、約束を 果たせませんでした。" (Kaisha wa kaizen o yakusoku shimashita ga, yakusoku o hatasemasen deshita.)
after an unpleasant experience, you are careful to avoid it...
to make noticeable progress
I agree with your idea or opinion
to consider something carefully from all angles
Endure a difficult situation until it improves.
to generate many creative ideas in a group discussion
