decisive
UK: dɪˈsaɪsɪv | US: dɪˈsaɪsɪv
adj. having the power to settle a matter conclusively
adj. showing the ability to make decisions quickly and firmly
adj. unmistakable; definitive
The word "decisive" originates from the Latin decidere (to cut off, settle), combining de- (off) and caedere (to cut). The root cis- (cut) reflects the idea of "cutting off" uncertainty, leading to a clear resolution. Over time, decisive evolved in English to describe actions or qualities that bring clarity or finality, emphasizing the metaphorical "cutting" of ambiguity.
Her decisive action prevented further damage.
The CEO’s decisive leadership turned the company around.
The battle was a decisive victory for the allied forces.
He lacked a decisive answer to the problem.
The judge’s ruling was decisive and left no room for appeal.