Idiom idiom
no doubt
Meaning
you use this when you are quite sure that something is true or will happen.
Examples
“There is no doubt that it will rain today.”
“She has worked so hard on this project that there is no doubt she will succeed.”
“Given the overwhelming evidence presented during the trial, there is no doubt in the jury's mind that the defendant is guilty.”
Origin
Inherited from Middle English *ne doute*, a calque of the Old French *saunz doute*. The French phrase was itself borrowed unadapted into Middle English, providing the parallel construction that persists in the modern idiom.
Last updated April 22, 2026