gainsays是什么意思

  名词：gainsayer  过去式：gainsaid  过去分词：gainsaid  现在分词：gainsaying  第三人称单数：gainsays

  近义词：negative，denial，contradiction，controvert，deny，dispute，oppose，naysay，contradict，argue，refute，contravene，disaffirm，negate，challenge，admit，