schlendern
to stroll
To walk slowly, leisurely, and without a specific destination.
Am Sonntag schlendern wir gerne durch den Park.
On Sundays, we like to stroll through the park.

to stroll
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to stroll
To walk slowly, leisurely, and without a specific destination.
Am Sonntag schlendern wir gerne durch den Park.
On Sundays, we like to stroll through the park.

Since 'schlendern' (to stroll) describes movement, the perfect tense is formed with the auxiliary verb 'sein' (to be). So you say 'ich bin geschlendert' (I strolled), not 'ich habe geschlendert'.
Wir sind gestern Abend gemütlich am Strand entlang geschlendert.
We strolled leisurely along the beach yesterday evening.
'Schlendern' (to stroll) does not just mean 'langsam gehen' (to walk slowly). The word has a positive, relaxed, and leisurely connotation. It describes walking without hurry and often without a fixed destination, purely for pleasure.
Die Touristen schlenderten entspannt durch die Altstadt.
The tourists strolled relaxedly through the old town.
'Schlendern' (to stroll) is often combined with prepositions that describe movement within a space, such as 'durch' (through) (the park), 'über' (across) (the square), or 'entlang' (along) (the promenade).
Am Wochenende schlendern wir gerne über den Flohmarkt.
On weekends, we like to stroll around the flea market.
to stroll
'spazieren' and 'schlendern' are very similar when talking about slow, relaxed walking. 'Spazieren gehen' describes the whole activity more: you go outside to move around or relax. 'Schlendern' puts more emphasis on the manner of walking: slowly, casually, and without a plan. It often sounds especially fitting when you are walking through streets, a market, or a city. In everyday language, 'spazieren gehen' is more general, while 'schlendern' feels a bit more vivid.

Vor dem Termin schlendere ich noch kurz durch die Altstadt.
Before the appointment, I stroll briefly through the old town.
Du gehst nach der Arbeit oft mit dem Hund spazieren.
You often take the dog for a walk after work.