Reconstruction:Proto-Slavic/kriti

Looking only on the meaning “to purchase” it has been related as follows:

• From Proto-Indo-European *kʷréyh₂t, root aorist of *kʷreyh₂- (“to buy”).[1]
• From Proto-Indo-European *kʷri-n-h₂ (Derksen) or *kʷri-ne (ЭССЯ), from root *kʷreyh₂- (“to buy”)

Seen as cognate with Tocharian B karyor (“buying”). Sanskrit क्रीणाति (krīṇāti, “to buy”) (root क्री (krī), Persian خریدن (xaridan), Old Irish crenaid (“to buy”), Ancient Greek ἐπριάμην (epriámēn, “I bought”). Also Baltic derivatives: Old Lithuanian krienas (“money, pay; pretium pro sponsis”), Latvian kriens (“groom's presents for bride, parents and friends”).

Based on the meaning “to curve” only attested in derived terms one might put it to *(s)ker- (“to turn”).

*kriti pf[2]

1. to turn, to bend, to twist, to curve
2. to make go round, to put into exchange, to cause to circulate
3. to buy, to purchase, to obtain by commercial exchange

   Synonym: *kupiti

• *krina (“calabash”)
• *krida (“sieve”)
• *krinica (“slough, gully”)
• *kridlo (“wing”)
• *krivъ (“curved”)

• *věniti, *věno (“bride-price”)
• *tъrgъ (“commerce”)
• *krojь, *krojiti (“to cut out”)

• Church Slavonic: крити (kriti), ?*крьнути (*krĭnuti) (Russian)

• East Slavic:
  • Old Novgorodian: крити (kriti)
  • Old East Slavic: крити (kriti), ?*крьнути (*krĭnuti), крьнеть (krĭnetĭ) / кренеть (krenetĭ), крени (kreni)
    • Belarusian: крану́цца (kranúcca)
    • Ukrainian: крину́тиса (krynútysa)

• Patri, Sylvain (1994) “Origine et désintégration de la conjugaison de kriti en vieux russe”, in Historische Sprachforschung / Historical Linguistics (in French), volume 107, number 2. H., →DOI, pages 284–297
• Vasmer, Max (1964–1973) “кренуть”, in Oleg Trubachyov, transl., Этимологический словарь русского языка [Etymological Dictionary of the Russian Language] (in Russian), Moscow: Progress
• Trubachyov, Oleg, editor (1985), “*kriti”, in Этимологический словарь славянских языков [Etymological dictionary of Slavic languages] (in Russian), numbers 12 (*koulъkъ – *kroma/*kromъ), Moscow: Nauka, page 160
• Trubachyov, Oleg, editor (1987), “*krьnǫti”, in Этимологический словарь славянских языков [Etymological dictionary of Slavic languages] (in Russian), numbers 13 (*kroměžirъ – *kyžiti), Moscow: Nauka, page 74
• Sreznevsky, Izmail I. (1893) “крьнути”, in Матеріалы для Словаря древне-русскаго языка по письменнымъ памятникамъ [Materials for the Dictionary of the Old East Slavic Language Based on Written Monuments]‎ (in Russian), volumes 1 (А – К), Saint Petersburg: Department of Russian Language and Literature of the Imperial Academy of Sciences, column 1341
• Filin, F. P., editor (1981), “кренути”, in Словарь русского языка XI–XVII вв. [Dictionary of the Russian Language: 11ᵗʰ–17ᵗʰ cc.]‎ (in Russian), numbers 8 (крада – лящина), Moscow: Nauka, page 29
• Filin, F. P., editor (1981), “крити”, in Словарь русского языка XI–XVII вв. [Dictionary of the Russian Language: 11ᵗʰ–17ᵗʰ cc.]‎ (in Russian), numbers 8 (крада – лящина), Moscow: Nauka, page 59
• Zaliznjak A. A. (1984) “Наблюдения над берестяными грамотами, §40-§41”, in Вопросы русского языкознания, volume 5, Moscow: Nauka, pages 114-118