Simple past tense and past participle of rue.(verb)
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Use "rued" in a sentence
"Later, when oil prices spiked again, in 1990 and again in 2008, causing great hardship and economic disruption, a lot of people recalled the Carter years and rued the lost opportunity."
"Unlike just a few years ago, when the publics of America's oldest allies rued America's power, they are now alarmed by its diminishing economic might."
"Then he got in the mood again, and rued having missed that slew of articles."