1
irrational + noun
表示不合理的性质，常用于修饰恐惧、行为等名词。
He has an irrational fear of spiders.
他对蜘蛛有一种无理性的恐惧。
不合理的；没有道理的；荒谬的
先理解核心含义，再看它在真实句子里的用法。
不合理的；没有道理的；荒谬的
Not based on or using reason; illogical or absurd.
He has an irrational fear of spiders.
他对蜘蛛有一种无理性的恐惧。
非理性的
Not rational; unfounded, nonsensical or wrong-headed.
无理数的
Of a real number, that cannot be written as the ratio of two integers.
不合逻辑的
not consistent with or using reason
不能表示为两个整数之商的实数
real but not expressible as the quotient of two integers
His decision to quit his stable job without a backup plan was completely irrational.
他在没有备用计划的情况下辞去稳定工作的决定是完全不合理的。
AI contextual example
The square root of 2 is an irrational number that cannot be written as a simple fraction.
2的平方根是一个无理数，不能写成简单的分数。
AI contextual example
She had an irrational fear of flying, even though statistics show it is very safe.
她对飞行有一种不理性的恐惧，尽管统计数据显示飞行非常安全。
AI contextual example
irrational fears
非理性的恐惧
WordNet
表示不合理的性质，常用于修饰恐惧、行为等名词。
He has an irrational fear of spiders.
他对蜘蛛有一种无理性的恐惧。
作表语，描述主语的性质。
Her decision was completely irrational.
她的决定完全不理性。
使用形式主语it，后接不定式短语。
It is irrational to ignore the evidence.
忽略证据是不合理的。
Not this
He thinks very irrational.
Use this
He thinks very irrationally.
irrational 是形容词，不能修饰动词 think，应改为副词 irrationally。
Not this
He is an irrational.
Use this
He is irrational.
irrational 作为形容词不能直接用作名词指人，应去掉冠词，直接用形容词作表语。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
不合理的行为
His irrational behavior puzzled everyone.
他的不合理行为让每个人困惑。
非理性的恐惧
She has an irrational fear of spiders.
她对蜘蛛有一种非理性的恐惧。
不理智的决定
Making an irrational decision can lead to regret.
做出不理智的决定可能导致后悔。
无理数
Pi is an irrational number.
π是一个无理数。
非理性的想法
He tried to rid his mind of irrational thoughts.
他试图摆脱非理性的想法。
非理性的繁荣
The stock market was driven by irrational exuberance.
股市受到非理性繁荣的推动。
非理性的恐惧
He has an irrational fear of spiders.
他对蜘蛛有一种非理性的恐惧。
非理性繁荣
The stock market was driven by irrational exuberance before the crash.
股市在崩盘前受到非理性繁荣的驱动。
人类非理性行为的能力确实令人惊叹。
Spock often remarks on the irrational behavior of humans in Star Trek.
在《星际迷航》中，斯波克经常评论人类的非理性行为。
Use irrational naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
ir-（不）+ rational（理性/有理数），所以irrational=不合逻辑的；数学中指不能表示为整数比的实数，如π。
语域：formal 常见场景：mathematics、number theory 此处的“irrational”指“不能表示为整数之商的实数”，属于数学领域的专业术语，通常用于正式学术语境。
These words share the ending /ʃənəl/ (or /ʃənl/) and rhyme with 'irrational' in their final syllables. Note that 'irrational' is spelled with double 'r', but the sound matches. Words like 'national' have stress on the first syllable, while 'irrational' stresses the second.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.