protestation
noun [countable, uncountable] (formal)a strong statement that something is true, especially when other people do not believe you 郑重的声明；坚决的表示 She repeated her protestation of innocence. 她再度强调自己是清白的。 Despite his protestation to the contrary, he was extremely tired. 尽管他极力否认，但他确实筋疲力尽了。
Word OriginMiddle English: from Old French, from late Latin protestatio(n-), from protestari ‘to protest’, from pro- ‘forth, publicly’ + testari ‘assert’ (from testis ‘witness’).