Swearing "moron" - this word is an insulting denomination. Expresses a disdainful attitude towards a person, infringes on his dignity. This is the name of people who are unreasonable and at the same time commit unlawful acts that cause harm to themselves or others.
Dictionary meaning
The word "moron" is the common name for an inadequate person. It has a criminal origin, refers to slang expressions. Initially, prisoners used it, calling inmates for the desire to do everything so as not to perform community service.
A moron is a fearless and at the same time insane person who is not afraid to get maimed or commit a crime. So in Russian literature you can find the mention of this word, applicable to prisoners of camps and Siberian colonies. Synonyms are idiot, fool, moron, madman, embitsil, stupid, idiot.
All synonyms are often abusive, but imply a similar meaning. The word moron is the combination of the two components “prig-” and “fool”. Otherwise, it can mean "with a fool," which is described as a patient man who staunchly aborts the abnormal attacks of a woman.
Extra meaning
Often a person can act like a moron. The meaning of the word in this case changes its meaning and a figurative interpretation appears. This refers to the foolish cunning, committing inappropriate actions in order to later justify his actions to society.
The word "moron" is often called people who are unable to control their emotions. Such fools do things that spoil everything: holidays, weddings, any event. But it happens the other way around: such people have intent in committing bad deeds, because they like it. They can cause bodily harm to others or spoil the property for reasons completely incomprehensible to a normal person.