The antonyms for the word "auto biographies" are diverse as they cover a wide range of genres and forms of writing. Fictional works, such as novels and short stories, are considered antonyms to autobiographies as they are crafted by imagination rather than personal experiences. Poetry, essays, and memoirs are also alternative forms of writing that don't necessarily follow the same narrative structure as an autobiography. Additionally, non-fiction works like scientific research papers, academic writings, and news articles also serve as antonyms since they are heavily research-oriented and lack the personal touch one would find in an autobiography. Overall, the antonyms for autobiographies provide a vast array of writing that cater to different interests and purposes.