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undoubtful
Derived word form of doubtful

Example Sentences

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It is our deliberate judgment that no first volume by any author has ever been published in America showing more undoubtful symptoms of genuine poetic power than this.

From The Atlantic Monthly, Volume 05, No. 28, February, 1860 by Various

His friends still wrought reprieves for him: and, indeed, his fact, till now in the government of Lord Angclo, 130 came not to an undoubtful proof.

From Measure for Measure The Works of William Shakespeare [Cambridge Edition] [9 vols.] by Glover, John, librarian of Trinity College, Cambridge

He hated what he called 'doubtful knowledge,' and ever tended either to transfer it into the region of undoubtful knowledge, or of certain and definite ignorance.

From Faraday as a Discoverer by Tyndall, John

At the same time there was too great a possibility—his jealousy called it more,—for him to be willing to take any forward and undoubtful steps himself.

From Say and Seal, Volume II by Warner, Susan

His friends still wrought reprieves for him; and, indeed, his fact, till now in the government of Lord Angelo, came not to an undoubtful proof.

From Measure for Measure by Shakespeare, William