This is the 15067th most frequent German word.
sonntags
"Sonntags" means "on Sundays."
In this context, 'sonntags' is used to describe a general state or observation about Sundays.
Sonntags ist die Stadt ruhiger als an anderen Tagen.
On Sundays, the city is quieter than on other days.
Here 'sonntags' indicates a habitual action occurring on Sundays.
Sonntags gehe ich oft in den Park.
On Sundays, I often go to the park.
The word 'sonntags' refers to a recurring event happening specifically on Sundays.