Looking up...
The car is decelerating as it approaches the red light.
Das Auto verlangsamt sich, während es sich der Ampel nähert.
sich verlangsamen; an Geschwindigkeit verlieren
The economy is decelerating after years of rapid growth.
Die Wirtschaft verlangsamt sich nach Jahren des schnellen Wachstums.
The train began decelerating before entering the station.
Der Zug begann zu verlangsamen, bevor er den Bahnhof erreichte.
Often used in technical contexts (e.g., physics, engineering) but also in general language.
In physics, 'decelerating' implies a negative acceleration (slowing down). In general language, it often means 'slowing down' without strict scientific precision.
From Latin *de-* (down, away) + *celerare* (to hasten), via French *décélérer*. First recorded in English in the early 20th century.
Common in both technical and everyday contexts. In physics, it specifically refers to a reduction in velocity (negative acceleration).