die Schrittgeschwindigkeit
Meanings
Examples
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Vocab:
der Schritt, der Fortschritt, schrittweise, der Rückschritt, schreiten, einschreiten, überschreiten, die Ausschreitung

Word Family
The core idea of the root was:
healthy, fit
The only English family member I could find mentioned in the sources is sound in the sense of proper – like in safe and sound.
The German gesund is essentially this, but with the ge-prefix, because why not.