Where does “zuurpruim” come from?

zuurpruim (Dutch) comes from Dutch zuur, from Middle Dutch suur, from Old Dutch sūr, from Proto-West Germanic sūr, from Proto-Germanic sūraz, from Proto-Indo-European suHrós — sour, salty, bitter.

zuurpruim (Dutch): A sourpuss, grouch

Definitions

A sourpuss, grouch

Ancestry of “zuurpruim”, step by step

zuurpruim traces back through two separate lines of ancestry.

via Dutch zuur

Step	Language	Word	Meaning
1	Dutch	zuur	sour; acidic; acid
2	Middle Dutch	suur	—
3	Old Dutch	sūr	sour
4	Proto-West Germanic	sūr	sour, acidic
5	Proto-Germanic	sūraz	sour, acidic
6	Proto-Indo-European	suHrós	sour, salty, bitter

via Dutch pruim

Step	Language	Word	Meaning
1	Dutch	pruim	A plum tree, one of certain trees of the genus...
2	Middle Dutch	prume	—
3	Old Dutch	prūma	—

Every word from Proto-Indo-European suHrós →Every word from Proto-Germanic sūraz →Every word from Proto-West Germanic sūr →