When you are being unique this means that you are one of a kind or a true original. No two people are completely alike, even identical twins have some unique traits. Being unique can be good or bad, depending on what sets you apart from everyone else. If you are eccentric and own 200 cats then your uniqueness is not positive, and you will be known for being the animal hoarder who is unusual. If you are Mother Theresa then you are unique in a good way because of your work with the poor and diseased. .