Having the function of finally deciding or settling; decisive, determinative, conclusive, final: esp. in definitive sentence, and the like.

That represents the final stage in a process; leaving nothing further to be done or said; conclusive, definitive. Earliest in the last word at word…

gen. Of a statement, conclusion, etc.: incontrovertible; decisive, final. Obsolete.

Finally determined upon or decided; expressing a final decision; definitive; conclusive, final.

Of a statement, conclusion, event, etc.: decisive; final; unequivocal. Cf. peremptory, adj. 2a. Obsolete.

Decided, settled, fixed; decided or resolved upon.

That ‘concludes’ a question or an opponent (see conclude, v. 10 4); conclusive, decisive, convincing.

Definitive, final.

Conclusive, decisive, convincing. Obsolete.

Of an argument, statement, etc.: That closes or decides the question; decisive, convincing.

Of resolves, etc.: Final, determinate, absolute.

(un-, prefix1 affix 1b.)

(un-, prefix1 affix 1b.)