Dutch word plankenkoorts comes from Dutch -en-, Dutch plank (A (wooden) plank. A shelf.), Dutch koorts (Fever.)

Detailed word origin of plankenkoorts

Dictionary entry	Language	Definition
-en-	Dutch (nld)	Genitival interfix indicating that the former part is a characteristic of the latter.
plank	Dutch (nld)	A (wooden) plank. A shelf.
koorts	Dutch (nld)	Fever.
plankenkoorts	Dutch (nld)	Stage fright.

Words with the same origin as plankenkoorts