Know-it-alls think they know everything. They feel superior, are dismissive of others' opinions, are unwilling to listen to others, and love to tell others how to do their job. Know-it-alls like to hear themselves talk. This behavior may become so ingrained that it becomes part of the know-it-all's personality.
Know-it-alls may have a cluster of personality characteristics, including impulsivity, poor listening skills and an inability to read social cues. These could be symptomatic of certain mental disorders, such as attention deficit hyperactivity disorder or narcissistic personality disorder.
ESTJs have a tendency to think they are always right and that their moral compass is objective, absolute and universal.
A large new study published in Nature Human Behavior, however, provides evidence for the existence of at least four personality types: average, reserved, self-centered and role model.
The rarest personality type is the INFJ personality type, known as 'The Counselor'. INFJ is the rarest personality type across the population, occurring in just 2% of the population. It is also the rarest personality type among men. INFJ stands for Introversion, Intuition, Feeling, and Judging.
The temperaments are determined by the balance of these emotions. For example, the choleric temperament is more prone to anger than the other temperaments.
Extreme narcissists can be know-it-alls. They may bully, blame, and humiliate others, refusing to take responsibility for their own mistakes, explains Joseph Burgo, author of The Narcissist You Know. And they can be vindictive.
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INFP and INFJ: The Overthinkers
When it comes to these types, their anxiety can stem from an inclination to overthinking.
People who overthink tend to score high in the neurotic department. Neuroticism is one of the five big personality traits, along with openness, conscientiousness, extraversion and agreeableness.
They're probably ISFJs, who feel super uncomfortable with the prospect of hurting anyone's feelings. "They tend to be wallflowers and can sometimes stumble over their words," says Owens. They'll likely skip the inflammatory family dinner conversation—even if they're Zooming in from thousands of miles away.
A "know-it-all" may be trying to compensate for an underlying insecurity. A "know-it-all" who has a fear of intimacy may try to instigate debate to feel a sense of connection without getting too close. Dealing with a know-it-all does not require seeing them as they want to be seen, or catering to that need.
The INFP may be the toughest personality type of all for others to understand. They are seemingly easy-going and carefree, but when it comes to their values, they can become suddenly uncompromising. They're friendly to a fault, but they frequently find others hard to be around.
Thinker (INTP)
INTPs are generally the most logical-minded of the personality types. They love patterns, are quick to notice discrepancies and have a strong ability to read people. They aren't typically interested in practical daily activities but instead enjoy environments where they can express creativity.
om·ni·scient äm-ˈni-shənt. : having infinite awareness, understanding, and insight. an omniscient author.
Conceited. Someone who is conceited behaves in a way that shows they think they are very intelligent, skillful, or attractive. This word shows that you do not like people like this.
Narcissists are self-centered individuals who think and act as though the world revolves around them. They're often hard to deal with, but altruists—selfless individuals—might be the best people to take on this tough job.
Here are some narcissism red flags to look out for: Lacking empathy. They seem unable or unwilling to have empathy for others, and they appear to have no desire for emotional intimacy. Unrealistic sense of entitlement.
There are plenty of tell-tale signs, like self-importance, a lack of empathy, a demanding personality and an excessive need for admiration.
INFPs are often viewed as sensitive and sweet people, who don't have much of a temper. In truth INFPs just don't waste their anger on small things, and will only lose their temper when it is truly just in their opinion.
The Type A personality is characteristically impatient, but any of the types can tend towards impatience. (Read more about the four overall personality types.)
Behavioural aggression is a choice to react physically toward the feeling of anger. This form of anger expression is physical and often aggressive, or at the very extreme end of the spectrum, violent. Aggression is behaviour that has an intended motivation to cause harm to someone else who doesn't wish for it.