Here are some possibilities:
* "De-titled": This could be a made-up word meaning to remove a title from something. For example, "de-titling" a book might mean removing its title page.
* "De-tittle": This could also be a made-up word, similar to "de-titled", meaning to remove a title.
* "De-titled" as a misspelling: It could be a misspelling of "entitled", which means having a right to something.
To understand what "de titled" means, you need more context. Please provide the full sentence or situation where you encountered this phrase.