Comments: Initial t- in Ing. is obviously a result of dissimilation. The root contains an expressive medial geminate. It belongs to the 5th class in Ing. and 6th class in Chech.
Comments: The Nakh forms reflect different locatives and derivates from the root *psar(V)- (not attested without suffixes). The root is also used in Bacb. si-psre(ħ) 'the day before yesterday' = Chech. sīsara, Ing. sijsara id. (etymology of the first part, PN *si-, is not quite clear - perhaps a dissimilation < *ši- 'two', lit. 'two evenings (ago)').
Comments: In Ing. - a form with the diminutive *-ḳ (cf. also Chech. (Usl.) sārag id.). 6th class in both languages. Since there is no Bacb. reflex, it is impossible to determine whether we deal with PN *s- or *ps-, and whether there was a medial laryngeal. External evidence is in favour of PN *psɦārV.
Comments: Ing. has a secondary prothesis (ust < *u-sṭu). Obl. base *psṭare- (cf. Chech. stera-, Ing. istar-o, Bacb. psṭari-). 6th class in all languages. The same historical root (with loss of *p-) is present in the compound *sṭ-aḳ "man, person" q.v.
Comments: Obl. base *psṭuw-nV-, cf. Chech. stūna-, Ing. suwno, Bacb. pstujnĩ; cf. also Bacb. psṭujnŏ "woman". An interesting compound is Chech. stun-da "father-in-law" ("wife's father") = Ing. ust-da, where Ing. has a prothetic vowel and preserves the -st- combination. Cf. also Cheb. stu, Shar., Khild. su.
Comments: Obl. base *pšē- (cf. Chech. Usl. šē-ŋ). 5th class in Chech. and Bacb., but 6th class in Ing. There exists a derivate from this root: PN *pšē-l "cold (n.)" (cf. Bacb. pšel, Chech. šel-dan "to cool", Ing. šel-de id.), *pšē-li-(n) "cold (adj.)" (Bacb. pšelĩ, Chech. šīla, Ing. šīla).
Comments: 3d class in Chech., 4th class in Ing. Obl. base *pχā-nu- (Chech. pχōna-) / *pχā-ni- (Ing. pχäno, Chech. plur. pχēna-š). The Ing. direct base pχän is a back-building from the oblique base. In Chech. the word is glossed as "hornbeam; plane-tree".
