The expletive "moron" is a derogatory term. Expresses a dismissive attitude towards a person, infringes on his dignity. This is the name given to people who are unreasonable and at the same time commit illegal acts that cause damage to themselves or others.
Dictionary value
The word "moron" is a common name for an inadequate person. It has a criminal origin, refers to slang expressions. Initially, it was used by prisoners, naming inmates for their desire to do everything in order not to do community service.
A jerk is a fearless and at the same time insane person who is not afraid of getting hurt or committing a crime. So in Russian literature you can find a mention of this word, applied to prisoners of camps and Siberian colonies. Synonyms are idiot, fool, moron, crazy, ambitious, stupid, idiot.
All synonyms are often abusive, but imply a similar meaning. The word moron is a combination of two components "pri-" and "fool". Otherwise, it can mean "with a fool", which is described as a patient man who endures the abnormal attacks of a woman.
Optionalmeaning
Often a person can act like a jerk. The meaning of the word in this case changes its meaning and a figurative interpretation appears. This refers to a sly fool who commits inadequate actions in order to subsequently justify his actions before society.
The word "moron" is often used to refer to people who are unable to control their emotions. Such fools do things that spoil everything: holidays, weddings, any event. But it also happens the other way around: such people have intent in their bad deeds, because they like it. They can cause bodily harm to others or damage property for reasons completely incomprehensible to a normal person.