forming or having the nature of a turning point or crisis; " a critical point in the campaign"; " the critical test"

determining or having the power to determine an outcome; " cast the decisive vote"; " two factors had a decisive influence"

characterized by decision and firmness; " an able an decisive young woman"; " we needed decisive leadership"; " she gave him a decisive answer"

Having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive.

Marked by promptness and decision.

Final; conclusive; as, a decisive victory; prompt; positive; determined.

Decisively.

Decisiveness.

Having the power of deciding: final: positive.

Final; conclusive; positive.

Putting an end to debate or question; conclusive; positive; decided.

Having the power or quality of deciding; final; conclusive; firm and resolute of purpose.

For reasons which are far from clear, Pitt refused to take decisive action. – William Pitt and the Great War by John Holland Rose

Philip's voice was without a tremor, low, forceful and decisive. – Colonel Carter's Christmas and The Romance of an Old-Fashioned Gentleman by F. Hopkinson Smith

There was no answer for a few minutes, and then the words whispered were very short and decisive. – Commodore Junk by George Manville Fenn

There is something extraordinarily decisive and satisfying about Tiel when he speaks like that. – The Spy in Black by J. Storer Clouston

8 is quite decisive. – Christology of the Old Testament: And a Commentary on the Messianic Predictions, v. 1 by Ernst Wilhelm Hengstenberg

" A victory, a great, decisive victory! – The Coming Conquest of England by August Niemann

Not a few shots were now fired; but the young ladies scarcely heeded them in the excitement of this decisive moment. – The Hour and the Man An Historical Romance by Harriet Martineau

The decisive interview came off on the following morning. – Barren Honour: A Novel by George A. Lawrence

She was going to play a decisive game. – Parisian Points of View by Ludovic Halévy Commentator: Brander Matthews

Her second letter tells me as a decisive proof how very bad she is, that every day she feels shot in the head. – Memoir and Letters of Francis W. Newman by Giberne Sieveking

278; Saxa Rubra, site of decisive victory of, ii. – Walks in Rome by Augustus J.C. Hare

We hope your help may be quick and decisive. – Kelly Miller's History of the World War for Human Rights by Kelly Miller

" We can't spoil that lovely program that took you so long to make, for anything," said Polly, in a decisive fashion. – Five Little Peppers at School by Margaret Sidney

This campaign will be decisive, for me,"- glancing towards Anneke-" I must return a conqueror, in one sense, or I do not wish to return at all. – Satanstoe by James Fenimore Cooper

In fact I had a sharp and decisive answer concerning several things of which I had dared to make a question. – Thomas Wingfold, Curate by George MacDonald

If it comes to a point where decisive action has to be taken-" " You're the one to take it," interrupted the sheriff. – Mystery Ranch by Arthur Chapman

Neither of them could maintain a satisfactory show of composure as the decisive moment approached. – The Damnation of Theron Ware by Harold Frederic