a situation or activity that is not productive

全損, 非生産的な投資
to have an undesirable, unfortunate, or disappointing outcome
with no chance of succeeding in a competition
far from the correct or expected result
a situation or series of events that is marked by a sequence of humorous mistakes, mishaps, or misunderstandings
a period of hardship, struggle, or adversity

苦しい日々, 艱難辛苦の時期
to lose the chance to take advantage of something, particularly a good opportunity
someone who is prone to lose something that is of great value or importance to them, such as their position, job, title, etc.
someone or something that has never succeeded or is very unlikely to succeed in the future

死んだアヒル, 絶望的なケース
to suddenly fail at something
a situation that shows no signs of progress or improvement

行き止まり, デッドエンド
used to describe a situation or plan that has come to a complete halt or has become unproductive, with little to no chance of progress or success
to be no longer effective or of much use
having failed in doing or achieving something and unable to continue
to experience a fall in social or financial status
someone who was once significant or important but is now considered outdated or no longer influential
to be unable to come up with ideas or solutions to a problem
used to say that there are clear indications or signals that something negative or disastrous is going to happen soon, and that it is likely to be unavoidable
to defeat a person or a group thoroughly, often in a very humiliating manner
an imaginary or symbolic prize given to the person who finishes in last place or performs poorly in a competition or event

木のスプーン, 最下位の賞
to overwhelm or defeat someone completely and unexpectedly
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