His testimony in court was found to be a misstatement of the facts.

misstatement 是由前缀 mis-（表示“错误、不正确的”）和名词 statement（陈述、声明）组成的复合名词。前缀 mis- 改变了 statement 的含义，表示“错误的陈述”或“虚假陈述”。