neologism
psychopathological symptom, characterized by the invention of new words that have meaning only to the person using them
en-GB/niːˈəʊləˌd͡ʒɪzəm/
en-US/niˈɑləˌd͡ʒɪzəm/
psychopathological symptom, characterized by the invention of new words that have meaning only to the person using them