Incognito - adj : with your identity concealed
As we travel through the experiences we perceive as life, we are defined by our interactions with others. While personal identity is always in front, we are simultaneously judging others. People we work with. People we pass on the street. People we share an elevator with. Despite a very limited fund of information, we form an opinion largely based on a series of assumptions. Sometimes we are correct, sometimes not. When an individual allows you to cling to your assumptions despite their innaccuracy, that person is incognito.