The etymology from irrational comes from the Latin word irrationālis. A word is that has been formed from the union of the following lexical components of Latin:
-The prefix “in-”, which is used to indicate “no” or “without”.
-The verb “reor”, which is synonymous with “think” and “believe.”
-The suffix “-cion”, which indicates “action and effect”.
-The suffix “-al”, which is equivalent to “relative to”.
It is an adjective that is used to qualify what is wrong or contrary to it.
For instance: “It is irrational to try to reverse the economic crisis with a devaluation that will only further impoverish the people”, “The club’s leadership was once again irrational in parting with the best young players on the team to hire veterans who are close to retirement”, “The young man was the victim of an irrational attack when he had an ice cream in the park”.
Among the words that can function as synonyms for irrational, some stand out such as foolish, absurd, gross or lost. On the contrary, among its antonyms are thoughtful, coherent and sensible.
The notion of reason alludes to the faculty that allows the human being to produce and question concepts, looking for contradictions or similarities and generating other ideas derived from them. What is endowed with reason, which therefore has coherence or logic, is known as rational: what is without reason, on the other hand, is irrational.
Suppose a young man has had a bad leg pain for several days. Instead of resting and consulting a doctor, choose to go play soccer to see if the annoyance goes away. It is a irrational decision, since it is most likely that physical activity will aggravate the condition.
In the same way, we have to establish that there are so-called irrational thoughts, which are those that manifest themselves in the form of necessity or even demand and that have a marked absolutist aspect. Hence, if those are not fulfilled, the person who has them acts violently or with notable anger.
In the field of math, is classified as irrational to a quantity or a root that cannot be expressed exactly through whole numbers or fractional numbers.
This differentiates irrational numbers from rational numbers, which can be expressed as the quotient of two whole numbers. Pi is the best known irrational number: it reveals the relationship between the length of a circumference and its diameter, expressed as 3.14159265 …
Likewise, we find works that carry the term we are analyzing in their titles. This would be the case with “Irrational Exuberance”, a 2015 work that is written by Robert J. Shiller, the winner of the 2013 Nobel Prize in Economics.
In addition, in the cinema we come across films such as “The Irrational Man.” It is a film of American origin, which was released in 2015 and is directed by Woody Allen. It tells the story of a university professor of Philosophy who, in the midst of existential crisis, begins a relationship with one of his students.