irrational : Idioms & Phrases
irrational hostility
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noun extreme prejudice
WordNet
irrational impulse
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noun a strong spontaneous and irrational motivation
- his first impulse was to denounce them
- the urge to find out got him into trouble
WordNet
irrational motive
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noun a motivation that is inconsistent with reason or logic
WordNet
irrational number
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noun a real number that cannot be expressed as a rational number
irrational.