The term 'Popular Sports Coupe' can be summarized as the Toyota Celica, a 6-letter word. The Toyota Celica was a popular sports car produced by Toyota from 1970 to 2006. It was a two-door coupe that was available in multiple generations and featured a variety of engines, transmissions, and body styles. The Celica was known for its sporty design and performance, making it a popular choice among car enthusiasts.