The Clue Substantial, as a role in a movie
The Answer MEATY
The word "meaty" describes something that is rich and full of substance. In the context of a movie role, a "meaty" part means it has a lot of depth and complexity, allowing the actor to showcase their skills. Such roles often involve significant character development and emotional range. This makes "meaty" a perfect fit for the crossword clue about substantial roles in films.