Great Russia, also known as Grand Duchy of Moscow, has been an influential nation throughout history. When we talk about synonyms for the term "Great Russia," we can use words such as powerful, formidable, influential, distinguished, and illustrious. These words uniquely describe Russia's significant stature, both geographically and politically. Besides, we can also use words like rich, abundant, vast, and immense, which reflect the country's natural resources and landmass. Words like impressive, majestic, and splendid can be used to describe the country's prowess in art, culture, and architecture. All in all, Russia has been a great nation that has impacted the world in so many ways, and these synonyms only mirror its grandeur.