Pronunciation: /ɪˈræʃənl/
noun a person who is not logical or reasonable
A1 I don't understand why she is so irrational sometimes.
A2 His fear of spiders is completely irrational.
B1 The decision to invest all his money in that risky venture seemed irrational.
B2 Her irrational behavior during the meeting caused some concern among the team.
C1 The scientist's irrational belief in his own theories led to his downfall.
C2 The politician's irrational decisions cost him the election.
adjective not logical or reasonable
A1 Some people have irrational fears of spiders.
A2 She made an irrational decision based on emotion rather than logic.
B1 His irrational behavior caused confusion among his colleagues.
B2 The belief in superstitions is often considered irrational by skeptics.
C1 The jury found the defendant's actions to be irrational and illogical.
C2 Despite evidence to the contrary, she clung to her irrational beliefs.
formal His fear of flying was completely irrational, as statistics show it is one of the safest modes of transportation.
informal Irrational fears can really hold you back from trying new things.
slang Stop being so irrational, dude. There's no need to freak out over a little spider.
figurative Her irrational decision to quit her job without having another one lined up left her in a difficult situation.
irrationalized
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more irrational
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will be irrational
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is being irrational
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