populaaristen
Populaaristen is a Finnish word, the genitive plural form of "populaarinen." "Populaarinen" translates to "popular" in English. Therefore, "populaaristen" essentially means "of the popular ones" or "belonging to the popular ones." This grammatical form is used when referring to something that pertains to, originates from, or is characteristic of a group of things or people that are popular.
For instance, one might use "populaaristen artistien" to mean "of the popular artists," or "populaaristen elokuvien"