This is the 1000th most frequent Ukrainian word.
ну
An interjection meaning "well," "so," or used to express hesitation or emphasis.
Here, 'ну' is used as a discourse marker to grab attention or signal the beginning of a question.
Ну, що будемо робити далі?
So, what will we do next?
The 'ну' here conveys an exclamation or emphasizes the sentiment being expressed.
Ну і день сьогодні!
What a day today!
In this sentence, 'ну' is employed as a hesitation marker, softening the statement or showing contemplation.