Reconstruction:Proto-Slavic/kalъ

Etymology
. No reliable non-Slavic cognates have been identified to date (including in Baltic languages, which is surprising considering some archaic features of the word).

Semantically close (also Doric, which could indicate possible derivation from ) is unexplained as well, since derivation from a common IE  is prevented by accentuation (Hirt's law). Beekes suspected it to be a 🇨🇬 (non-IE substrate) borrowing.

Something similar is : there's no etymology, sematics seems to be close and according to de Vaan, sequence "squ-" indicates it isn't an inherited word. However, the root may be derived to and  even though those lack an etymology as well.

is either a Dravidian borrowing or a late development, thus unrelated.

Noun

 * 1) dirt

Descendants

 * East Slavic:
 * South Slavic:
 * Old Church Slavonic:
 * Cyrillic:
 * Glagolitic:
 * West Slavic:
 * Glagolitic:
 * West Slavic:
 * West Slavic:
 * West Slavic:
 * West Slavic:
 * West Slavic:
 * West Slavic:
 * West Slavic: