UNCREDITED
a.Not believed.
uncredited
un cred it ed |ˌənˈkreditid ˌənˈkrɛdədəd | ▶adjective (of a person or their work ) not publicly acknowledged as being part of something, esp. a publication or broadcast.
un |cred ¦it ¦ed |ʌnˈkrɛdɪtɪd | ▶adjective (of a person or their work ) not publicly acknowledged as having contributed to something, especially a publication or broadcast.