Verb (used with object) : to convict a prisoner of a felony.    From Dictionary.com. 

Confidence, not fear, is the keynote of a strong and convictive doctrine.    From Wordnik.com.  [The Armed Forces Officer Department of the Army Pamphlet 600-2] Reference

His way of reasoning is always his own, sometimes sublime and heavenly, so as not to be reduced unto the common rules of our arts and sciences, without a derogation from its instructive, convictive, and persuasive efficacy.    From Wordnik.com.  [Pneumatologia] Reference

The arguments were specious and plausible, but not quite convictive.    From Wordnik.com.  [The Offspring of Fancy] Reference

With the evidences and convictive assurances that the apostle and his brethren had of the Mediator's presence and converse in this world.    From Wordnik.com.  [Commentary on the Whole Bible Volume VI (Acts to Revelation)] Reference

THE last part of this third discourse endeavours to shew, "that the Scripture is not convictive of the most obstinate and acute adversaries.".    From Wordnik.com.  [The Works of Dr. John Tillotson, Late Archbishop of Canterbury. Vol. 10.] Reference

Stream of Dissatisfaction, as to forbear acting up to the heighth of his own Perswasion, about what may be judged convictive of a Crime, whose.    From Wordnik.com.  [The Wonders of the Invisible World Being an Account of the Tryals of Several Witches Lately Executed in New-England, to which is added A Farther Account of the Tryals of the New-England Witches] Reference

And that tenderness be used towards those accused, relating to matters presumptive and convictive, and also to privacy in Examinations, and to consult.    From Wordnik.com.  ["More Wonders of the Invisible World," by Robert Calef, 1700 ; from Narratives of the Witchcraft Cases, 1648-1706] Reference

When they arrived in New York she confronted everybody whom she met with a stony stare, which was almost accusative and convictive of guilt, in spite of entire innocence on the part of the person stared at.    From Wordnik.com.  [The Copy-Cat, & Other Stories] Reference

The rugged, street savvy manoeuvring of '39 Thieves' combined with the squelching groove and convictive sloganeering of 'Citronella' ( "kill television!") make for big highlights that bind the crowd in head bobbing unison.    From Wordnik.com.  [Drowned In Sound // Feed] Reference

His importunate exercises in prayer and exhortation, should they be all noted, would fill many pages; but I have noted his soliloquy in the above lines, as that through which we may take the most immediate view of the soul's exercises, when under the convictive operations of God's spirit.    From Wordnik.com.  [Sketches of North Carolina, Historical and Biographical, Illustrative of the Principles of a Portion of Her Early Settlers] Reference

Laws in many Nations have been enacted against those vile practices; those amongst the Jews and our own are notorious; such cases have often been determined near us by wise and reverend Judges, upon clear and convictive Evidence; and thousands of our own Nation have suffered death for their vile compacts with Apostate spirits.    From Wordnik.com.  [Jerome Cardan A Biographical Study] Reference

And thus far then we think, that the way of proving the sameness of these books with those that bore the character of sacred books, or books of divine authority, is altogether unexceptionable, and so strong, as that there can lie nothing against it to the common reason and understanding of men, when we have such a way of being assured of this matter, as must be convictive to any that do allow themselves the liberty and use of their understandings.    From Wordnik.com.  [The Whole Works of the Rev. John Howe, M.A. with a Memoir of the Author. Vol. VI.] Reference

And this would be a great deal more convictive, if it were so obvious to every one to take notice of, and observe many things that are more latent, and lie out of common view: to think how the several veins and arteries do receive and distribute and return back again the blood from its fountain, the heart, so as continually to renew strength and vigour in the body as the matter doth require: to think of the admirable variety and suitableness of those things that we have in our bodies, called muscles, and all the several sorts of motion that are to be performed; about six (as is observed) belonging to the eye itself, without which it were impossible it should move in the several ways it doth: and about four hundred and thirty of these in one human body.    From Wordnik.com.  [The Whole Works of the Rev. John Howe, M.A. with a Memoir of the Author. Vol. VI.] Reference

Shines still, convictive as a marriage-ring.    From Wordnik.com.  [Aurora Leigh] Reference