Where does “худъ” come from?

худъ (Old East Slavic) comes from Proto-Slavic xudъ, from Proto-Indo-European ksowdós, from Proto-Indo-European k⁽ʷ⁾sewd-, from Proto-Indo-European kes- — to scrape, comb.

худъ (Old East Slavic): bad

Definitions

Ancestry of “худъ”, step by step

Step	Language	Word	Meaning
1	Proto-Slavic	xudъ	small, little, weak
2	Proto-Indo-European	ksowdós	—
3	Proto-Indo-European	k⁽ʷ⁾sewd-	to crush, disperse; to disintegrate
4	Proto-Indo-European	kes-	to scrape, comb

Every word from Proto-Indo-European kes- →Every word from Proto-Indo-European k⁽ʷ⁾sewd- →Every word from Proto-Indo-European ksowdós →