Where does “zuiveringseed” come from?

zuiveringseed (Dutch) comes from Dutch eed, from Middle Dutch eet, from Old Dutch ēth, from Proto-West Germanic aiþ, from Proto-Germanic aiþaz, from Proto-Indo-European oyt-.

zuiveringseed (Dutch): an oath by government ministers and important civil servants in which it is affirmed that they haven't purchased their position

Definitions

an oath by government ministers and important civil servants in which it is affirmed that they haven't purchased their position

Ancestry of “zuiveringseed”, step by step

zuiveringseed traces back through two separate lines of ancestry.

via Dutch eed

Step	Language	Word	Meaning
1	Dutch	eed	oath
2	Middle Dutch	eet	—
3	Old Dutch	ēth	oath
4	Proto-West Germanic	aiþ	oath
5	Proto-Germanic	aiþaz	oath
6	Proto-Indo-European	oyt-	—

via Dutch zuivering

Step	Language	Word	Meaning
1	Dutch	zuivering	purification, cleansing
2	Dutch	-ing	Creates action nouns referring to the performance...
3	Middle Dutch	-inge	—
4	Old Dutch	-inga	—

Every word from Proto-Indo-European oyt- →Every word from Proto-Germanic aiþaz →Every word from Proto-West Germanic aiþ →