expressing finality with no implication of possible change; " an absolute ( or unequivocal) quarantee to respect the nation's authority"; " inability to make a conclusive ( or unequivocal) refusal"

forming an end or termination; especially putting an end to doubt or question; " conclusive proof"; " the evidence is conclusive"

final and deciding; " the conclusive reason"

Conclusively.

Belonging to a close or termination; decisive; convincing; putting an end to debate or question; leading to, or involving, a conclusion or decision.

Decisive; final.

Final: convincing.

Final; decisive.

Decisive.

The fact that the stone was left so that it could be at once opened is conclusive proof to my mind that the treasure never came. – The Treasure of the Incas by G. A. Henty

Could proof be more conclusive? – Philosopher Jack by R.M. Ballantyne

The decision of that most eminent artist was conclusive. – Anecdotes of Painters, Engravers, Sculptors and Architects, and Curiosities of Art, (Vol. 2 of 3) by Shearjashub Spooner

Although this isn't conclusive, it seems logical enough. – Diplomatic Immunity by Robert Sheckley

" This is a conclusive study," murmured Durtal, " but not that which would lead to La Trappe. – En Route by J.-K. (Joris-Karl) Huysmans

This seemed to be conclusive. – Janice Day by Helen Beecher Long

And the fact that we live is in itself conclusive that we are yet needed in the world by all who can be affected by our mortal existence. – After the Storm by T. S. Arthur

Besides all this, they gave the maid a quarter, which was the most conclusive evidence of all. – St. Cuthbert's by Robert E. Knowles

The blush, and a certain warmth in her tone, seemed to Sophia conclusive evidence of her hidden regard for this man. – The Lovels of Arden by M. E. Braddon

The arguments he means to use are few and conclusive. – The Scottish Chiefs by Jane Porter

On the first point the reply of the Army itself was prompt and conclusive. – Bernard Shaw's Preface to Major Barbara by George Bernard Shaw

Were the experiments authoritative and conclusive? – The Art of Public Speaking by Dale Carnagey (AKA Dale Carnegie) and J. Berg Esenwein

It is hard perhaps to pass so heavy a sentence upon seemingly so slight an offence, but we are forced to believe that the very existence and presence of this evil, in its more rampant and impudent state, is of itself conclusive upon the point of good or evil government, upon the question of the predominance of human charity or of the blackest intensity of malice. – A Cursory History of Swearing by Julian Sharman

This should make me doubt myself, perhaps; but they crowd again, and seem so conclusive until I have written them down. – The Complete Project Gutenberg Works of George Meredith by George Meredith

But the answers are not satisfactory; at any rate they are not conclusive. – The Ethnology of the British Islands by Robert Gordon Latham

They are not true for all cases, but some of them are true for most or for a good many, and they may be applied with a certain probability though they are not rigidly conclusive. – Logic, Inductive and Deductive by William Minto

Yet this is not conclusive. – The English Language by Robert Gordon Latham