The term "middle-aged movie star" can be used to describe an actor or actress who is in their forties, fifties or even early sixties and still actively working in the film industry. However, there are several alternative phrases that could be used to describe this same concept. These might include 'seasoned actor', 'veteran performer', 'experienced thespian', or 'established film star'. Each of these terms can help to capture the essence of an actor who has been in the industry for some time and has garnered a degree of recognition and respect among their peers and audiences alike.