- 1
Having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive.
- decisive vote
- decisive battle
- 2
Decided; definite; incontrovertible.
- decisive victory
- 3
Marked by promptness and decision, resolute; without hesitation.
- decisive action
- a decisive person
syn. decided · positive · conclusive
ant. indecisive