What is what does it mean if someone is pretentious?

If someone is pretentious, it means that they are trying to appear more important, more knowledgeable, or more sophisticated than they actually are. These people often pretend to have interests, opinions, or accomplishments that they do not possess in an attempt to impress others or gain respect. They may use big words or exaggerated gestures in an attempt to appear intelligent or cultured, or they may name-drop in an attempt to link themselves to famous or successful people. Being pretentious can often be seen as insincere or dishonest, and may cause others to view the person as arrogant or untrustworthy.