This is the 2160th most frequent Polish word.
popularna
"Popularna" in English means "popular."
Here, 'popularna' modifies the noun 'książka' (book) as an adjective to describe its widespread appeal.
To książka jest bardzo popularna wśród młodzieży.
This book is very popular among teenagers.
In this context, 'popularna' describes a person's widespread recognition and admiration among people.
Ona jest popularna dzięki swoim osiągnięciom sportowym.
She is popular due to her sports achievements.
'Popularna' here, in its masculine form 'popularny,'—since 'styl' is masculine—depicts the widespread acceptance of a trend or style at a specific time.