What is the meaning of Decisive?

Having the power or quality of deciding a question or controversy; putting an end to contest or controversy; final; conclusive.

Decided; definite; incontrovertible.

Marked by promptness and decision.

Hurd, Seth P. (1847), “Decisive”, in “False Pronunciation”, in A Grammatical Corrector; or, A Vocabulary of the Common Errors of Speech, Philadelphia: E. H. Butler & Co, →OCLC, page 80.

feminine plural of decisivo

Source: wiktionary.org