1
definitively settle/prove sth
常与表示结论的动词连用，强调作出最终定论。
The new evidence definitively settles the debate.
新证据最终解决了这场辩论。
决定性地；最后地；权威地
先理解核心含义，再看它在真实句子里的用法。
决定性地；最后地；权威地
In a way that is final, decisive, and conclusive.
The new evidence definitively settles the debate.
新证据最终解决了这场辩论。
区别于 definitely（肯定地）
以不仅果断而且确定无疑、最终的方式。
In a way that is not only decisive, but also conclusive and final.
The judge definitively ruled that the contract was valid.
法官最终裁定该合同有效。
After years of research, the scientist definitively proved the theory.
经过多年的研究，这位科学家最终证明了该理论。
She definitively answered all the questions in the interview.
她在面试中明确地回答了所有问题。
常与表示结论的动词连用，强调作出最终定论。
The new evidence definitively settles the debate.
新证据最终解决了这场辩论。
后接 whether 或其他疑问词引导的从句。
Researchers cannot yet definitively determine whether the drug is safe.
研究人员尚无法最终确定这种药物是否安全。
用于转述声明或立场，表示语气肯定、没有含糊。
He definitively stated that he would resign.
他明确表示自己将辞职。
常用被动结构，强调至今没有最终结论。
The cause of the accident has not been definitively established.
事故原因尚未得到最终确定。
Not this
He definitively said he would come.
Use this
He definitely said he would come.
definitively 意为'决定性地、最终地'，表示以权威或结论性的方式；这里要表达'肯定地'，应该用 definitely。两者词义不同，definitely 表示'一定、肯定'。
Not this
The evidence is definitively.
Use this
The evidence is definitive.
系动词 is 后应接形容词作表语，definitively 是副词，不能单独作表语；应用形容词 definitive（决定性的、最终的）。
Not this
This is a definitively answer.
Use this
This is a definitive answer.
修饰名词 answer 需要用形容词 definitive，而不是副词 definitively；副词通常修饰动词、形容词或整个句子。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
决定性地回答
The new evidence definitively answers the question.
新证据决定性地回答了这个问题。
确凿地证明
No one has yet definitively proved this theory.
迄今还没有人确凿地证明这一理论。
最终确立
This discovery definitively established her reputation.
这一发现最终确立了她的声誉。
彻底解决
The court ruling definitively settled the dispute.
法院的裁决彻底解决了这场争端。
最终确定
The test results will definitively determine the cause.
检测结果将最终确定原因。
明确证实
The findings definitively confirm the hypothesis.
这些发现明确证实了该假设。
Use definitively naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记 definite（确定的）+ly：像法官落槌，一锤定音，决定性地、最终地。
语域：formal 常见场景：学术论文、正式声明、法律/行政文件 该词多用于正式书面语或需要表达‘最终、权威’语气的场合，日常口语中比较少见。
这些词都拼作 -itively，且末尾都有非重读的 /tɪvli/，但重音位置和重读元音各不相同，因此没有一个与 definitively 押韵。
Dictionary facts from ECDICT, WIKTIONARY.