Simple past tense and past participle of founder.(verb)
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Use "foundered" in a sentence
"Oliver Golding's tilt at the boys 'singles title foundered in the semi-final."
"Seven months ago, he left a job at the Medical College of Georgia in Augusta, where similar plans to seek NCI designation foundered in the bad economy."
"The Bush and Obama administrations considered helping Yemen formulate a rehabilitation program, but the idea foundered amid concerns about the Middle Eastern country's capacity to implement it, officials said."