irrational Definition
- 1not logical or reasonable
- 2not based on reason or clear thinking
Using irrational: Examples
Take a moment to familiarize yourself with how "irrational" can be used in various situations through the following examples!
Example
It's irrational to be afraid of spiders.
Example
Her decision was completely irrational.
Example
His behavior was so irrational that we had to call the police.
Example
The idea of spending all that money on a car seems irrational to me.
irrational Synonyms and Antonyms
Synonyms for irrational
Antonyms for irrational
Phrases with irrational
a real number that cannot be expressed as a ratio of two integers
Example
Pi is an irrational number.
an excessive or unreasonable fear of something
Example
His irrational fear of heights prevented him from going on the roller coaster.
behavior that is not based on reason or clear thinking
Example
Her irrational behavior caused her to lose her job.
Origins of irrational
from Latin 'irrationalis', from 'in-' (not) + 'rationalis' (reasonable)
Summary: irrational in Brief
The term 'irrational' [ɪˈræʃənl] refers to something that is not logical or reasonable, and is not based on reason or clear thinking. It can describe anything from a fear to a decision, as in 'Her decision was completely irrational.' 'Irrational' also has specific meanings in mathematics, such as 'irrational number,' which cannot be expressed as a ratio of two integers.
