This is the 6636th most frequent Portuguese word.
final
"Final" in Portuguese means "end" or "final."
Here, 'finalmente' derived from 'final', is used as an adverb meaning 'finally', expressing the successful completion of something.
Finalmente, ele conseguiu terminar o trabalho.
Finally, he managed to finish the work.
In this sentence, 'final' is used as a noun meaning 'end' or 'conclusion', referring to the ending of the movie.
No final do filme, há uma surpresa.
At the end of the movie, there is a surprise.
Here, 'final' functions as an adjective describing the match, indicating it is the last one in the championship.