This is the 753rd most frequent Portuguese word.
rapidamente
Quickly.
The word 'rapidamente' modifies the verb 'terminou', describing the manner in which the work was finished.
Ele terminou o trabalho rapidamente.
He finished the work quickly.
Here, 'rapidamente' emphasizes the haste in the action of leaving due to a specific event.
Saímos rapidamente de casa ao ouvirmos o barulho.
We quickly left home upon hearing the noise.
In this context, 'rapidamente' is used in a general sense to denote the manner in which learning occurs effectively if conditions are met.