decisively
UK: dɪˈsaɪsɪvli | US: dɪˈsaɪsɪvli
adv. in a manner that settles an issue convincingly or with finality
adv. with clarity and firmness of purpose
The word "decisively" stems from the Latin decidere ("to cut off, determine"), combining de- ("off") + caedere ("to cut"). The root "decisive" entered English via French décisif, retaining the sense of "bringing clarity by cutting off uncertainty." The suffix "-ly" transforms the adjective into an adverb, emphasizing the manner of action. The progression reflects a metaphorical "cutting through" ambiguity to reach firm conclusions.
She answered the question decisively, leaving no room for doubt.
The general acted decisively to secure the victory.
The committee resolved the matter decisively after hours of debate.
His tone was calm but decisively firm.
The new policy was implemented decisively across all departments.