This is the 17813th most frequent Russian word.
упорно
Persistently.
The word 'упорно' is used here to describe the manner of the action, emphasizing determination and perseverance.
Он упорно трудится, несмотря на все трудности.
He works persistently despite all difficulties.
Here, 'упорно' reinforces the persistent and determined effort required to achieve objectives.
Мы должны упорно стремиться к нашим целям.
We must strive for our goals persistently.
In this instance, 'упорно' conveys a focused and unwavering attitude in the described action.