Published refers to something that has been made public, while un-published is something that has not been made public. In the context of literature or academic work, antonyms for un-published can be words like published, released, disclosed, and published elsewhere. These antonyms describe works that have been made available to the public either through traditional print media or digital platforms. When it comes to personal information or confidential work, antonyms for un-published can be words like leaked, exposed, disclosed, or revealed. These words describe information that has been made public against the wishes of those who want it to remain private or protected.