To be proven wrong in argument or morally indefensible, and to have exhausted all options or reached an impasse; to be at the end of one's tether both in reason and resources.
面对铁证如山，他理屈事穷，只好承认了自己的过错。
Faced with undeniable evidence, he was morally indefensible and had no more arguments, so he had to admit his mistake.
Era:
Ancient
Frequency:
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