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be irrational
[/bi ɪˈræʃənəl/]
verb phrase
ser irracional
1.
to act or think in a way that is not based on reason or logic
It would be irrational to make such an important decision without considering all the facts.
Seria irracional tomar uma decisão tão importante sem considerar todos os fatos.
2.
to lack logical reasoning or sensible judgment
Don't be irrational; let's think about this calmly.
Não seja irracional; vamos pensar sobre isto com calma.
3.
to behave in an unreasonable or unpredictable manner
His fear of flying seems to be irrational since he has never had a bad experience.
O seu medo de voar parece ser irracional já que nunca teve uma experiência negativa.
Synonyms
be illogical
be unreasonable
be nonsensical
lack reason
Antonyms
be rational
be logical
be sensible
be reasonable
Regional Variations
General Brazilian
ser irracional
Standard usage throughout Brazil
Portugal
ser irracional
Standard usage in European Portuguese
Related Idioms & Phrases
lose your head
not think straight
act out of character
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