A person who talks negatively and judgmentally is often referred to as a "cynic" or "pessimist." They may also be described as "critical" or "negative-minded." Such individuals tend to focus on flaws and shortcomings, often lacking a constructive or positive perspective.
what do you call a person who talks very less
A person who talks out of turn can be called disruptive, inconsiderate, or impulsive.
A person who talks nonsense can be called an eccentric, a babbling fool, or a gibberish speaker.
Iceburgers (:
An Ambassador.
judgemental
I would rather say that if the person talks about how intelligent they are then i for an adult call it conceded.
ghost whisperer
Voice over.
Such a person is called a chatterbox.
It is usually referred to a an introvert.
loquacious