There is no doubt that it will rain today.
no doubt
idiomyou use this when you are quite sure that something is true or will happen.
Origin
disputed originInherited from Middle English ne doute, a calque of Old French saunz doute, itself borrowed unadapted into Middle English.
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.
Last updated April 22, 2026