self-slowing
adjectiveUK /ˌselfˈsləʊɪŋ/
US /ˌselfˈsloʊɪŋ/
Something that slows itself down without help from anyone else.
The self-slowing toy car stops gently when it bumps into a wall.
OTHER MEANINGS
2. A process that naturally becomes slower as it goes on.
The self-slowing of the music made everyone feel calm.
3. A machine or system that reduces its own speed to stay safe.
The self-slowing escalator moves slowly when many people step on.
4. A habit of calming yourself down when you feel too excited.
Her self-slowing trick is to take three deep breaths.