Etymologically

Etymology and origin of the Biblical Hebrew word כשר

Confidence
Probable
Formation
Inherited
First attested
Hebrew Bible (Esther, Qohelet)
Inherited from
Proto-Semitic *kṯr
Ultimate origin
Proto-Semitic *kṯr
Etymology tree
inherited borrowed derived
Biblical Hebrew כשר
English kosher

Pronunciation

  • Tiberian: kāšēr, imperfect pausal yiḵšār[1][2]

Forms

כָּשֵׁר (kāšēr) verb[3] Qal perfect כָּשֵׁר, imperfect יִכְשַׁר; hiphil infinitive הַכְשֵׁיר.[4][3]

Etymology

It is inherited from Proto-Semitic *kṯr (“to succeed, be suitable”), a Semitic root whose /ṯ/ became /š/ in Hebrew.[5][4] Its cognates are Aramaic כשר (kəšar, “to be fitting, useful”), Classical Syriac ܟܫܪ (kšar, “to be upright, fitting; to increase”), and Ugaritic kṯr (“skilful”), the name also of the craftsman god Kothar.[4][6][7][8] Klein and von Soden also compare Akkadian kašāru (“to restore, replace”).[9][10]

Because Aramaic has /š/ here where its own reflex of /ṯ/ would be /t/, HALOT reports Kutscher's view that Aramaic took the root from Canaanite or Akkadian; it also notes, with a question mark, that Wagner counted the Hebrew verb among the Aramaisms.[4] All its biblical uses are in Esther and Qohelet, books in which Sáenz-Badillos finds Aramaisms relatively abundant.[1][11]

Earliest recorded meaning

The verb is used three times, all in late books.[1] Esther asks the king that he write to annul Haman's letters wəḵāšēr haddāḇār lip̄nê hammeleḵ “if the thing seems right to the king” (Esther 8:5).[1][3] Qohelet says that you do not know ʾê zeh yiḵšar “which will succeed”, this or that (Qohelet 11:6), and Qohelet 10:10 has the hiphil, of the advantage of wisdom.[3][4] Sáenz-Badillos places Qohelet probably in the second half of the 3rd century BC.[12]

Semantic evolution

In the Bible the verb means “to be proper, pleasing” and “to succeed”;[13] HALOT renders the hiphil of Qohelet 10:10 “to use properly”, with a question mark.[4][3] Ben Sira 13:4 uses the qal with lə-, and the Dead Sea Scrolls have the noun kōšer five times, in non-biblical texts.[4][13]

Rabbinic Hebrew made it a legal term.[14] The verb means to be fit, and the hiphil hiḵšîr is to declare fit or permitted; the adjective kāšēr is “fit, valid” and especially “ritually fit”, said of food, and kašrûṯ is ritual fitness.[14][15][16] Through Yiddish this kāšēr became English kosher, recorded from 1850, which by 1896 also meant “correct, legitimate”.[17][5] In Modern Hebrew כשר (kashér) means fit, proper and kosher, and the noun kōšer also ability.[18][16]

Timeline

  • Late Biblical Hebrew – three times, in Esther 8:5 and Qohelet 10:10 and 11:6.[1][3]
  • 2nd century BC – 2nd century AD – the noun kōšer five times in non-biblical Dead Sea Scrolls.[19][13]
  • Rabbinic Hebrew – kāšēr “fit, ritually fit”, hiḵšîr “to declare fit”.[14][15]
  • 1850 – English kosher, through Yiddish.[17]

Meanings

Verb

  1. qal: with lip̄nê, to be proper or pleasing in someone's view.[4][3]
  2. qal: to succeed, prosper.[4][3]
  3. hiphil: to give success, or to use properly (Qohelet 10:10; uncertain).[4][3][20]

Descendants

References

  1. ^ a b c d e Clear Bible (2023–), MACULA Hebrew Linguistic Datasets (Westminster Leningrad Codex, with Greek alignment), github.com/Clear-Bible/macula-hebrew, CC BY 4.0
  2. ^ Eep Talstra Centre for Bible and Computer (2021), BHSA: Biblia Hebraica Stuttgartensia Amstelodamensis, Text-Fabric dataset, version 2021, github.com/ETCBC/bhsa
  3. ^ a b c d e f g h i Brown, Francis; Driver, S. R.; Briggs, Charles A. (1906), A Hebrew and English Lexicon of the Old Testament, with an Appendix Containing the Biblical Aramaic, Oxford: Clarendon Press, p. s.v. כָּשֵׁר
  4. ^ a b c d e f g h i j Koehler, Ludwig; Baumgartner, Walter; Stamm, Johann Jakob (1994–2000), The Hebrew and Aramaic Lexicon of the Old Testament, transl. and ed. M. E. J. Richardson, 5 vols, Leiden: Brill, p. s.v. כשׁר
  5. ^ a b Huehnergard, John (2011), "Proto-Semitic Language and Culture" and "Semitic Roots", in The American Heritage Dictionary of the English Language, 5th ed., Boston: Houghton Mifflin Harcourt
  6. ^ Kaufman, Stephen A., ed., Comprehensive Aramaic Lexicon, Cincinnati: Hebrew Union College, cal.huc.edu
  7. ^ Sokoloff, Michael (2009), A Syriac Lexicon, Winona Lake: Eisenbrauns; Piscataway: Gorgias Press, p. 659
  8. ^ del Olmo Lete, Gregorio; Sanmartín, Joaquín (2015), A Dictionary of the Ugaritic Language in the Alphabetic Tradition, 3rd ed., transl. W. G. E. Watson, Leiden: Brill, p. s.v. kṯr
  9. ^ Klein, Ernest (1987), A Comprehensive Etymological Dictionary of the Hebrew Language for Readers of English, Jerusalem: Carta; Haifa: University of Haifa, p. s.v. כשׁר
  10. ^ von Soden, Wolfram (1965–1981), Akkadisches Handwörterbuch, 3 vols, Wiesbaden: Harrassowitz, p. 461
  11. ^ Sáenz-Badillos, Angel (1993), A History of the Hebrew Language, transl. John Elwolde, Cambridge: Cambridge University Press, p. 128
  12. ^ Sáenz-Badillos, Angel (1993), A History of the Hebrew Language, transl. John Elwolde, Cambridge: Cambridge University Press, p. 137
  13. ^ a b c Abegg, Martin G.; Jacobs, Jarod; Roorda, Dirk (2022), The Dead Sea Scrolls, Text-Fabric dataset, version 2.0.2, github.com/ETCBC/dss
  14. ^ a b c Jastrow, Marcus (1886–1903), A Dictionary of the Targumim, the Talmud Babli and Yerushalmi, and the Midrashic Literature, London: Luzac; New York: Putnam, p. s.v. כָּשֵׁר
  15. ^ a b Klein, Ernest (1987), A Comprehensive Etymological Dictionary of the Hebrew Language for Readers of English, Jerusalem: Carta; Haifa: University of Haifa, p. s.v. כָּשֵׁר
  16. ^ a b Klein, Ernest (1987), A Comprehensive Etymological Dictionary of the Hebrew Language for Readers of English, Jerusalem: Carta; Haifa: University of Haifa, p. s.v. כֹּשֶׁר
  17. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  18. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  19. ^ Sáenz-Badillos, Angel (1993), A History of the Hebrew Language, transl. John Elwolde, Cambridge: Cambridge University Press, p. 143
  20. ^ Holladay, William L. (1971), A Concise Hebrew and Aramaic Lexicon of the Old Testament, Leiden: Brill, p. s.v. כָּשֵׁר

Borrowed into

Related etymologies

  • אבן · also from Proto-Semitic
  • גן · also from Proto-Semitic
  • גוי · also from Proto-Semitic
  • יובל · also from Proto-Semitic
  • גמל · also from Proto-Semitic
  • שק · also from Proto-Semitic
  • אתון · also from Proto-Semitic
  • מר · also from Proto-Semitic
Cite this entry

“כשר.” Etymologically, 1 Nov. 2026, etymologically.com/hbo/%D7%9B%D7%A9%D7%A8. Accessed 1 Nov. 2026.

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