- having the power or quality of deciding; putting an end to controversy; crucial or most important: Your argument was the decisive one.
- characterized by or displaying no or little hesitation; resolute; determined: The general was known for his decisive manner.
- indisputable; definite: a decisive defeat.
- unsurpassable; commanding: a decisive lead in the voting.
Origin of decisive
SynonymsSee more synonyms for on Thesaurus.com
Examples from the Web for decisive
It is not a decisive war, with a single, signature victory, but a war of attrition.Pentagon Doesn’t Know How Many People It’s Killed in the ISIS War
Nancy A. Youssef
January 7, 2015
Regardless of how it occurred, this gap was not decisive in a state where Braley lost by nearly 100,000 voters.Did a Flawed Computer Model Sabotage the Democrats?
November 10, 2014
It was thought essential to strike hard and fast with maximum force in order to achieve quick, decisive victory.
In Paris, [French General Joseph] Gallieni felt this was the “decisive” day.
Scholars at least know what they are hoping for—decisive evidence and clear answers.Is This Alexander the Great’s Tomb?
September 13, 2014
As yet, however, no decisive advantage had been gained on either side.Stories from Thucydides
H. L. Havell
Still, as the case stood, his triumph was not the less brilliant or decisive.Ridgeway
At the dawn of the morning he made his attack sharp, unexpected, decisive.Howard Pyle's Book of Pirates
I do not know what he said to the surgeon-major, but it was something clear and decisive.My Double Life
"It doesn't matter whose sister you are," was the decisive reply.Roden's Corner
Henry Seton Merriman
- influential; conclusivea decisive argument
- characterized by the ability to make decisions, esp quickly; resolute
Word Origin and History for decisive
1610s, from Medieval Latin decisivus, from Latin decis-, past participle stem of decidere (see decide). Related: Decisively; decisiveness.