incredited
/ʌnˈkrɛdɪtɪd/Definitions
1. adjective
not having one’s name or contribution acknowledged or recognized, especially in a creative work.
“The uncredited co-author of the novel was finally revealed after years of secrecy.”
2. verb
to fail to acknowledge or give credit to someone or something.
“The company was accused of uncrediting the original creators of the idea.”