IPA: /ʌnˈfɪlməbl/
KK: /ʌnˈfɪlməbl/
Not suitable or able to be made into a film.
The novel was considered unfilmable due to its complex narrative structure.
Unfilmable → It is formed from "un-" (meaning not) and "film" (from Old English *filme*, meaning a thin layer or membrane) and "-able" (meaning capable of). The word "unfilmable" means not capable of being filmed or made into a film.
Think of something that is 'not' ('un-') able to be captured on 'film' — that's why we say it's unfilmable.