Hi
Would you say that both sound equally natural to native ears?
I rue the day I met him.
I regret the day I met him.
Thanks,
Tom
As your Ngram shows, 'rue the day' is more idiomatic, and that is the one that sounds more natural to me.
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As your Ngram shows, 'rue the day' is more idiomatic, and that is the one that sounds more natural to me.