peremptory vs decisive

peremptory and decisive both are adjectives.

Word	Noun	Adjective	Verb	Adverb
peremptory	No	Yes	No	No
decisive	No	Yes	No	No

peremptory (adjective)	decisive (adjective)
putting an end to all debate or action	determining or having the power to determine an outcome
offensively self-assured or given to exercising usually unwarranted power	characterized by decision and firmness
not allowing contradiction or refusal	forming or having the nature of a turning point or crisis
	unmistakable