definitive

Compared meaning: final and beyond doubt or change (adjective).

比较义项：最终的，决定性的，不容更改或怀疑的（形容词）。

• definitive 本词

  Definitive describes something final and authoritative, not to be changed or questioned again; it typically collocates with answer, version, guide or edition.

  definitive 表示某事是最终且具有权威性的，不会再被更改或质疑，常与 answer（答案）、version（版本）、guide（指南）、edition（版次）等词搭配。

  We still don't have a definitive answer to the question.

  我们仍然没有得到这个问题的最终答案。

• conclusive

  Conclusive describes evidence or proof strong enough to settle a matter and remove all doubt; it typically collocates with evidence, proof or test results.

  conclusive 表示证据或证明足以确证某事、消除所有疑虑，常与 evidence（证据）、proof（证明）、test results（检测结果）等词搭配。

  The test results were conclusive, so no more experiments were needed.

  检测结果是决定性的，因此不需要再做更多实验。

Definitive and conclusive both describe something final and settled. Definitive means authoritative and unable to be changed again, often used with answer, version, or edition. Conclusive describes evidence strong enough to remove all doubt, often used with evidence, proof, or test results.

这两个词在“最终、决定性”这一意义上很接近，都表示事情已经确定下来，但侧重点不同：definitive 强调权威性和不可更改，常用于回答、版本；conclusive 强调证据充分、足以消除疑虑，常用于证据、检测结果。