beyond a shadow of doubt

Also found in: Idioms.
References in periodicals archive ?
Justice Asif Saeed Khosa, heading the three-judge bench of the apex court, observed that the prosecution had failed to prove charges against the suspect beyond a shadow of doubt.
I know, beyond a shadow of doubt, the impact this event is making in their lives.
His new proposal - to eliminate state income taxes for teachers because they are indispensable to the good functioning of California - proves this beyond a shadow of doubt.