Of or relating to a surface; concerned only with the obvious or apparent;
Synonyms are: Shallow, External.
Since she is superficial, Kelly will only date guys who are above the height of 6'3, and below 6'7, with NO exceptions. As a defense mechanism, she believes that she is picky and that everyone is superfical to certain degree.
Someone who is SUPERFICIAL hides what is inside. They act like someone they are not on the outside, so that no one can get close enough to see who they really are on the inside. The act of being SUPERFICIAL can also really just be being shallow.
My boyfriend avoided deep conversations like they were herpes, and only stuck to what he knew, superficial conversation.