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

Of a sign, testimony, proof, etc.: indubitable, certain, conclusive. Frequently in religious contexts. Obsolete.

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

That decides; esp. that decides or determines beyond question; conclusive. Cf. decisive, adj.

That decides (a controversy, contest, etc.) conclusively or finally; determinative. Cf. deciding, adj.

Decisive, definitive. Obsolete. rare.

That settles or determines a matter; decisive, determinative.

Conclusive, decisive, convincing. Obsolete.

Tending to evince or prove; demonstrative, conclusive.

That prohibits or prevents someone from speaking; that reduces to silence, spec. (of a statement, question, response, etc.) conclusive; not able…

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

Such as to decide the question; decisive, determinative. Obsolete.

Decisive, critical; = decretory, adj. 2 3.

Of, relating to, or characterized by decision (in various senses); decisive.

Very important or significant; crucial.

That finally decides between two rival hypotheses, proving the one and disproving the other; more loosely, relating to, or adapted to lead to such…

That clinches.