The covert narcissist makes fun of others through jokes, blames others at work and in relationships, and works behind the scenes to cause others to fail for their benefit. They may also choose not to work on team or group projects but use the blame game to shift the focus to others.
The covert narcissist is not extroverted, and they tend to be very insecure. Staying away from others limits their need to compare themselves or to have to live up to external standards.
Constructive criticisms or mild correction is seen as a personal threat to the covert narcissist. They tend to respond to these types of comments with the silent treatment or anger. Keep in mind that perceived criticism is just as significant for these individuals as intended correction.