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Der Zug muss hier stoppen.
The train has to stop here.
to stop moving, operating, or functioning
Der Motor stoppte plötzlich.
The engine stopped suddenly.
Common in both everyday and technical contexts.
to stop someone or something from doing something
Sie versuchte, ihn zu stoppen.
She tried to stop him.
Avoid using 'stoppen' as a direct translation for 'stop' in all contexts. For example, 'stop the car' is better translated as 'halte das Auto an' in German, though 'stoppe das Auto' is also understood.
'Stoppen' is most natural when referring to machines, vehicles, or processes stopping abruptly or being brought to a halt. It is less common for abstract or figurative stops (e.g., 'stop talking' is typically 'aufhören zu reden').
From Middle High German *stoppfen* ('to stuff, stop up'), from Old High German *stophōn* ('to stop up'), ultimately from Proto-Germanic *stuppōną* ('to stuff'). Related to English 'stop' (borrowed from Old English).
In German, 'stoppen' is often interchangeable with 'anhalten' in everyday speech, though 'anhalten' may imply a more deliberate or temporary stop. 'Stoppen' can also imply a sudden or complete halt.