decisive

As adjectives the difference between decisive and irresolute

is that decisive is having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive while irresolute is undecided or unsure how to act.

As adjectives the difference between decisive and deliberate

is that decisive is having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive while deliberate is done on purpose; intentional.

As a verb deliberate is

to consider carefully.

As adjectives the difference between decisive and unmistakable

is that decisive is having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive while unmistakable is unique, such that it cannot be mistaken for something else.

As adjectives the difference between decisive and noncommittal

is that decisive is while noncommittal is tending to avoid commitment; lacking certainty or decisiveness; reluctant to give out information or show one's feelings or opinion.

As adjectives the difference between decisive and ultimate

is that decisive is while ultimate is final; last in a series.

As a noun ultimate is

the most basic or fundamental of a set of things.

As a noun reason

is a cause:.

As a verb reason

is to exercise the rational faculty; to deduce inferences from premises; to perform the process of deduction or of induction; to ratiocinate; to reach conclusions by a systematic comparison of facts.

As an adjective decisive is

.

As adjectives the difference between decisive and assertive

is that decisive is having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive while assertive is boldly self-assured; confident without being aggressive.

As adjectives the difference between decisive and divisive

is that decisive is having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive while divisive is having a quality that divides or separates.

As adjectives the difference between decisive and salient

is that decisive is having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive while salient is worthy of note; pertinent or relevant.

As a noun salient is

an outwardly projecting part of a fortification, trench system, or line of defense.

Decisive is a related term of authoritative.

As adjectives the difference between decisive and authoritative

is that decisive is while authoritative is arising or originating from a figure of authority.