schnaufen

Etymology
An old variant of, documented in.

The fricative -f- (or -v-) instead of -b- is expected for Low German (compare ) as well as West Central German (compare 🇨🇬). However, such forms are also old in Upper German dialects, it not being sure whether the latter have borrowed them from the North, or have derived them natively. In modern standard German, schnaufen is an alternative form of schnauben, but is now the more normal of the two (schnauben tends to be used referring to either out of anger or that of an animal).

Verb

 * 1) to snort; to pant to breathe loudly
 * 2)  to breathe (in general)