A person who does not complain is a content person a person who at most times is at ease one who is in harmony with his/her circumstances without being uptight.
A person with integrity could be called honest, honorable, principled, or trustworthy.
When a person intentionally kills themselves, it is called suicide.
A person who studies the mind and behavior is called a psychologist.
A person who makes people laugh is called a comedian.
A person who collects things can be called a collector. If the collecting is thought to be excessive, such a person might also be called a packrat, or a hoarder.
Incessant complainer
There is a personality disorder called hypochondria. If they complain a lot about their physical being, then something is actually wrong in their mental being.
Incessant complainer
The definition of complain is to express dissatisfaction or irritation with a situation or person. You are showing that you are uncomfortable or dislike something.
you can only complain to one small thing called the local council or you could complain to the government.
the freedom of speech
To rag on someone is to complain about or criticize that person.
Watergate Hotel
Make a complaint, in person, to his or her commanding officer.
Everyone has a right to complain whether that person votes or does not vote. But, maybe if that person had voted, he or she might have nothing to complain about. In any event, I personally believe that people who don't vote should keep their complaints to themselves. If they don't want to participate in our political process of choosing government representatives, then they should not (although they have a right to) complain when those representatives do not act appropriately.
then you get kicked out
To "rant" means to talk at length about a subject, to complain bitterly. A rant can also be called a tirade or a diatribe. A "rant" is also a form of comedy, usually on television or video.