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The market's enthusiasm for high-tech stocks was irrational but understandable.
I knew I was being irrational, but when she was late I began to fear the worst.
This is the British English definition of irrational. View American English definition of irrational.
Change your default dictionary and thesaurus to American English.
View the pronunciation for irrational.
a game in which two teams of seven players take turns to chase and try to touch players on the opposing team
using sarcasm to upset someone or to show anger
a response to a scathing comment or unpleasant situation
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Definition of irrational from the online English dictionary from Macmillan Publishers Limited.