This is the 2722nd most frequent German word.
grössten
"Grössten" translates to "greatest" or "largest" in English, as the superlative form of "groß" (big/large/great).
In this sentence, 'größten' is used as an adjective in its superlative form to describe the noun 'Städte', indicating the size of the cities as the largest among a group.
Die größten Städte in Deutschland sind Berlin, Hamburg und München.
The largest cities in Germany are Berlin, Hamburg, and Munich.
Here, 'größte' is used in its superlative form to describe 'Freude', signifying the highest degree of joy experienced in a given situation.
Wir haben die größte Freude daran, zusammen Abenteuer zu erleben.
We have the greatest joy in experiencing adventures together.
In this example, 'größten' is used predicatively as a superlative form of the adjective 'groß', describing the extent of the audience size in a comparative context.