People who depend on other people for their emotional gratification and the performance of ego or daily functions. They are needy, demanding, submissive. They fear abandonment, cling and display immature behaviors in their effort to maintain the "relationship" with their companion or mate upon whom they depend. No matter what abuse is inflicted upon them - they remain in the relationship.
See also the definition of the "Dependent Personality Disorder" in the DSM IV.
Previously called "covert narcissist", this is a co-dependent who depends exclusively on narcissists.
If you live with a narcissist, have a relationship with them, are married to them, work with them, etc. - it does NOT mean that you are an inverted narcissist.
To "qualify" as an inverted narcissist - you must WANT to be in a relationship with a narcissist, regardless of any abuse inflicted on you by him / her. You must ACTIVELY seek relationships with narcissists - and ONLY with narcissists - no matter what your (bitter and traumatic) past experience has been. You must feel EMPTY and UNHAPPY in relationships with ANY OTHER kind of person. Only THEN - AND if you satisfy the other diagnostic criteria of a Dependent Personality Disorder - can you be safely diagnosed as an "Inverted Narcissist".
The DSM IV defines the NPD using a few criteria. It is sufficient to possess 5 of them to "qualify\