decisive
//dɪˈsaɪ.sɪv//
Adjective
decisiveCanonical form
more decisiveComparative
most decisiveSuperlative
1
Having the ability to make decisions quickly and effectively; showing determination and firmness.
A good leader must be decisive in times of crisis.
2
Settling an issue or producing a definite result; conclusive.
The decisive evidence proved his innocence.