populaarimmassa
Populaarimmassa is a Finnish grammatical form meaning "in the most popular [place/thing]." It is the inessive case form of the superlative adjective populaarisin, which means "the most popular." The base adjective populaarinen means "popular" and is a loan from Swedish populär. The superlative is formed with the suffix -in, yielding populaarisin; adding the inessive ending -ssa produces populaarimmassa. This form is used when the noun it modifies is in the inessive case to indicate location or context, for example: "Tapahtuma järjestettiin populaarimmassa kaupungissa" (The event was held in the most popular city) or "Populaarimmassa osiossa esitellään viimeisimmät julkaisut" (In the most popular section, the latest publications are shown).
The usage is typical in descriptive writing, media analyses, or discussions of popularity and rankings. In everyday