This is the 13021st most frequent German word.
abfallen
"Abfallen" means "to decline, decrease, fall off, or slope downward."
The verb 'abfallen' is used to describe the action of leaves detaching or falling off from trees.
Die Blätter fallen im Herbst von den Bäumen ab.
The leaves fall off the trees in autumn.
The verb 'abfallen' describes the decrease or drop in tension in this context, often referring to a sudden change.
Nachdem die Spannung steigt, fällt sie plötzlich wieder ab.
After the tension rises, it suddenly drops again.
Here, 'abfallen' is applied to indicate the incline or slope of a path downwards.