Simple past tense and past participle of dump.(verb)
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Use "dumped" in a sentence
"But after spending three years recording his album 'Inspiration Information,' it flopped, his label dumped him, and Otis ran into drug and health problems."
"Apparently, to make room for other things deemed more important like episodes of “Firefly,” my brain dumped high school in its entirety."
"At these anti-tax tea parties in 2009, they are selling t-shirts and mugs and all the tea that gets dumped is purchased for the purpose of dumping it."