autobiographical UK /ˌɔː.təˌbaɪ.əˈɡɹæf.ɪk.əl/US /ˌɑtoʊˌbaɪəˈɡɹæfəkəl/ adjective1 •Of or relating to a person's life or an account of a person's life, as told by the subject. formsmore autobiographical · most autobiographical