Narcissism rhymes with:
classicism, classicism, criticism, cynicism, eroticism, gnosticism, lyricism, mysticism, skepticism, anglo-catholicism, anti-catholicism, catholicism, classicism, criticism, cynicism, empiricism, eroticism, fanaticism, gnosticism, lyricism, monasticism, mysticism, ostracism, racism, romanticism, skepticism, stoicism
Narcissism sounds like:
narasimha, narasimhan, norcen, norsemen, norwegian