This is the 4699th most frequent Portuguese word.
divertida
Amusing; fun.
In this sentence, 'divertida' is an adjective describing the subject 'ela' as being fun or entertaining.
Ela é uma pessoa muito divertida.
She is a very fun person.
Here, 'divertida' is used as an adjective to describe the noun 'festa', conveying that the event was enjoyable.
A festa foi muito divertida ontem.
The party was very fun yesterday.
In this case, 'divertida' acts as an adjective describing 'brincadeira', suggesting that the activity is entertaining for a specific audience, in this case, children.