Simple past tense and past participle of boycott.(verb)
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Use "boycotted" in a sentence
"In 2003, residents of the city of Kano and the state of the same name boycotted a polio vaccine effort on charges that it was a Western plot to make Africans infertile."
"Some representatives of African countries refused to walk into ( "boycotted") the conference."
"I have simply 'boycotted' BBC until it gets it head out of its ass and starts covering the news courageously and independently."