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rational
'rational' - used as an adjective
Synonyms for 'rational'
1. consistent with or based on or using reason
rational behavior
a process of rational inference
rational thought
2. of or associated with or requiring the use of the mind
the triumph of the rational over the animal side of man
3. capable of being expressed as a quotient of integers
rational numbers
4. having its source in or being guided by the intellect (distinguished from experience or emotion)
a rational analysis

'rational' - used as a noun
5. an integer or a fraction
The following are synonyms for 'rational'. Click on any of them to get both Bibliodata's full list of common definitions and a further set of synonyms.
 
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Antonym
  • irrational
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    Who Said that ?
    Fear of serious injury alone cannot justify oppression of free speech and assembly. Men feared witches and burnt women. It is the function of speech to free men from the bondage of irrational fears. - Click here to find out.
    Fact of the day
    George Washington had to borrow money to go to his own inauguration.