The word Insensato has its origins in the Bible, more precisely in the Gospel of Saint Luke, in what is known as the Parable of the rich insensato.
This parable describes a man who resorts to the capital sin of greed by accumulating material goods without being aware that when he dies he will not need any of it.
The etymological meaning of the word insensato comes from the Latin insensatus which means absence of good sense, that is, lack of understanding, wisdom, good judgment, prudence or experience.
In its daily use, the word insensato refers to a person who acts without sufficient maturity, without sanity and without thought.
Sometimes the term is also used for someone who does not use reason and behaves without thinking about the consequences of their behavior.
In this way and as an example of the use of the word insensato we can find a person who spends his salary in games of chance without taking into account that later he must feed his children or pay the bills.
This would be a clear example of how the term insensato would apply to this person, showing reckless and even foolish behavior.
The term insensato is also often used to describe a person who commits reckless acts without thinking and putting at risk the lives of others and even his own.
An example of the latter would be a man who lights a cigarette at a gas station or touches a plugged-in appliance with wet feet, thereby committing recklessness and being wild.
Another meaning of the term insensato is used to describe the behavior of children when they do not follow the rules or do some mischief thus disobeying the advice of their parents.