not based on, or not using, clear logical thought不合逻辑的;没有道理的 synonym unreasonable- an irrational fear无端的恐惧
- You're being irrational.你不可理喻。🔊🔊
opposite rationalExtra Examples- There was nothing inherently irrational in such a decision.从根本上看,这样的决定没什么不合理的地方。
- What is the reason for this seemingly irrational behaviour?这种看似不合理的行为的原因是什么?
Oxford Collocations DictionaryverbsadverbSee full entry Word Originlate Middle English: from Latin irrationalis, from in- ‘not’ + rationalis (from ratio(n-) ‘reckoning, reason’, from rat- ‘reckoned’, from the verb reri).