doubt the truth of

See: impugn
References in classic literature ?
It was evident that a boat had entered the bay, and I saw little reason to doubt the truth of the report that it had brought my companion.
They took hold of the worthy man; who, hearing on every side that he was intoxicated, did not in the least doubt the truth of this certainly not very polite assertion; but on the contrary, implored the ladies and gentlemen present to procure him a hackney-coach: they, however, imagined he was talking Russian.
If," he went on, addressing Irais, who looked rebellious, "you doubt the truth of my remarks, and still cling to the old poetic notion of noble, self-sacrificing women tenderly helping the patient over the rough places on the road to death or recovery, let me beg you to try for yourself, next time any one in your house is ill, whether the actual fact in any way corresponds to the picturesque belief.
If you doubt the truth of my words ask Lan-O, the slave girl.
And yet as he watched, uncertain whether to advance from the cover or to choose some other path to the house, he soon came to doubt the truth of this first conjecture.
Nearly a quarter of respondents said it has made them doubt the truth of almost every news story they see.
In his sentencing remarks, Judge Stephen Hopkins QC noted: "You gave the officers several different accounts, causing them to doubt the truth of what you were saying.
Therein lies a problem common to many projects tackling misinformation: Before someone even visits such a website, they have to not only doubt the truth of something they've seen on social media, but know such a website exists to check that rumor--and trust it to deliver sound information.
This fact has caused many Internet users doubt the truth of the operation.
And if you doubt the truth of that, just consider how it feels to accidentally stumble upon one.
More significantly Stories We Tell proves beyond doubt the truth of Bruner's thesis that life as led is inseparable from life as told: the Polley family's lives do not show "how it was," but rather demonstrate "how it was interpreted and reinterpreted, told and retold.
In the first paragraph of this "weretale for six actors, five voices, two players," narrator Jerne Voltampere proffers fair warning: "Reader, do not doubt the truth of my words, for the tale I tell is a lie from beginning to end.