Proto-Nakh: *lujsṭ
Meaning: 1 sheep's dung 2 thick, dense
Chechen: lüst 1, lüsta 2
Ingush: lista 2
Batsbi: jupsṭĩ 2
Comments: The noun *lujsṭ must have meant 'thick, clayish substance' (whence 'dung' in Chech.). The Bacb. form is interesting, because it demonstrates the original *-j- which had been shifted to Anlaut (*lujsṭi-n > *ljuwsṭi-n > jupsṭĩ); another trace of PN *-j- here is the Chech. vowel -ü- in the direct stem lüst.
Abayev (1973, 57-58) considers the Nakh adjective to be borrowed from Osset. lɨst(äg) / list(äg) 'small, thin'. This is hardly the case because of the non-trivial phonetic structure of the Nakh root (the semantic side also raises doubts).
