1
be unquestionable
作表语，强调主语无可置疑。
His integrity is unquestionable.
他的正直是毋庸置疑的。
无可置疑的；不容置疑的；毫无疑问的
先理解核心含义，再看它在真实句子里的用法。
无可置疑的；不容置疑的；毫无疑问的
not able to be doubted or questioned; beyond dispute
His integrity is unquestionable.
他的正直是毋庸置疑的。
不可否认的,明显的。
Undeniable, obvious.
无可置疑的
incapable of being questioned
非伪造的
not counterfeit or copied
不容置疑的
not open to question
His honesty is unquestionable.
他的诚实是无可置疑的。
AI contextual example
She faced the challenge with unquestionable courage.
她以无可置疑的勇气面对挑战。
AI contextual example
It is unquestionable that sleep affects learning.
睡眠影响学习，这是毫无疑问的。
AI contextual example
unquestionable authority
毋庸置疑的权威
WordNet
作表语，强调主语无可置疑。
His integrity is unquestionable.
他的正直是毋庸置疑的。
作定语修饰名词，表示该名词是无可争议的。
The report provides unquestionable evidence.
该报告提供了确凿的证据。
引导主语从句，表达一种不容置疑的事实。
It is unquestionable that she is the best candidate.
毫无疑问她是最佳候选人。
Not this
He is unquestionable honest.
Use this
He is unquestionably honest.
Unquestionable 是形容词，不能修饰形容词或动词；应使用副词 unquestionably。
Not this
It is unquestionable of his sincerity.
Use this
It is unquestionable that he is sincere.
Unquestionable 后接 that 从句，不接 of 短语；中文的‘...是无疑的’对应英语的 that 从句。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
无可置疑的正直
Her unquestionable integrity earned her the trust of everyone in the firm.
她无可置疑的正直赢得了公司里每个人的信任。
不容置疑的证据
The video provided unquestionable evidence of the theft.
那段视频为这起盗窃案提供了不容置疑的证据。
不容置疑的权威
He is an unquestionable authority on ancient Chinese history.
他是中国古代史方面不容置疑的权威。
不容置疑的事实
It is an unquestionable truth that regular exercise improves health.
经常锻炼能改善健康，这是不容置疑的事实。
无可置疑的忠诚
The soldiers showed unquestionable loyalty to their country.
这些士兵对国家表现出无可置疑的忠诚。
毋庸置疑的品质
The brand is known for its unquestionable quality.
这个品牌以毋庸置疑的品质著称。
Use unquestionable naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拆解为 un(不)+question(质疑)+able(可)：铁证如山，让人问不出口，即无可置疑的。
语域：formal 常见场景：正式写作、学术讨论 unquestionable 多用于正式或书面语境，表示某事无可置疑、不容争辩；日常口语中较少见，更常用 undeniable 或 no doubt。
常用于肯定句，表示强烈肯定
Dictionary facts from ECDICT, WIKTIONARY.