IPA: /ʌnˈpʌblɪʃt/
KK: /ʌnˈpʌblɪʃt/
Something that has not been made available to the public or printed in a book, magazine, or other media.
The author's unpublished manuscript was discovered years after her death.
Unpublished → It is formed from "un-" (meaning not) and "publish" (from Latin "publicare", meaning to make public). The word "unpublished" means not made public or not released for public view.
Think of 'not' ('un-') making something 'public' ('publicare') — that's why unpublished means it hasn't been shared with the public.