无疑 /wu˧˥ i˧˥/ Adverb

Example

• 他所言，[毋庸置疑] 蕴含着极大的真理。
• There is undoubtedly a great deal of truth in what he says.
• 毋庸置疑是表达“毫无疑问”最优雅且常用的书面语。