Where does “badborste” come from?

badborste (Swedish) comes from Swedish borste, from Old Swedish borst, from Old Norse burst, from Proto-Germanic burstiz, from Proto-Germanic bʰurstís, from Proto-Indo-European bʰr̥s-tí-s, from Proto-Indo-European bʰers- — top, tip, point.

badborste (Swedish): bath-brush

Definitions

bath-brush

Ancestry of “badborste”, step by step

badborste traces back through two separate lines of ancestry.

via Swedish borste

Step	Language	Word	Meaning
1	Swedish	borste	brush, broom
2	Old Swedish	borst	—
3	Old Norse	burst	bristle
4	Proto-Germanic	burstiz	bristle
5	Proto-Germanic	bʰurstís	—
6	Proto-Indo-European	bʰr̥s-tí-s	—
7	Proto-Indo-European	bʰers-	top, tip, point

via Swedish bad

Step	Language	Word	Meaning
1	Swedish	bad	a bath, the act of bathing; a bath, a place for...
2	Old Swedish	bädh	bath
3	Old Norse	beðr	bolster, bedding
4	Proto-Germanic	badją	bed; bedding
5	Proto-Indo-European	bʰēdʰ-	to bend, fold
6	Proto-Indo-European	bʰedʰ-	to bend, to press; to stab, dig; to dig

Every word from Proto-Indo-European bʰers- →Every word from Proto-Indo-European bʰr̥s-tí-s →Every word from Proto-Germanic bʰurstís →