This Proto-Slavic entry contains reconstructed terms and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.


Alternative formsEdit


Possibly rebuilt from u-stem *jìlъ[2][3], from Proto-Balto-Slavic *ī́ˀlus, from Proto-Indo-European *(H)iHlús (mud; dark)[4]. Perhaps cognate with Latvian īls (very dark), Ancient Greek ἰλύς (ilús, mud, slime), εἰλύ (eilú, very dark, black).[3][1]


*jьlъ m[1][2]

  1. silt
  2. clay



  • East Slavic:
    • Old East Slavic: илъ (ilŭ)
  • South Slavic:
  • West Slavic:
    • Old Czech: jíl
      • Czech: jíl (silt, clay)
    • Polish: (clay, natural dampness of earth), jеł (clay, natural dampness of earth) (dialectal)
    • Slovak: íl (silt, clay), il (silt, clay) (archaic)


  1. 1.0 1.1 1.2 Derksen, Rick (2008), “*jьlъ; *jьlo”, in Etymological Dictionary of the Slavic Inherited Lexicon (Leiden Indo-European Etymological Dictionary Series; 4), Leiden, Boston: Brill, →ISBN, page 211: “m. o; n o ‘silt, clay’”
  2. 2.0 2.1 Verweij, Arno (1994), “Quantity Patterns of Substantives in Czech and Slovak”, in Dutch Contributions to the Eleventh International Congress of Slavists, Bratislava (Studies in Slavic and General Linguistics)‎[1], volume 22, Editions Rodopi B.V., page 536
  3. 3.0 3.1 Vasmer, Max (1964–1973), “ил”, in Этимологический словарь русского языка [Etymological Dictionary of the Russian Language] (in Russian), transl. and suppl. by Oleg Trubachyov, Moscow: Progress
  4. ^ Beekes, Robert S. P. (2010), “ἰ̄λῡ́ς, -ύος”, in Etymological Dictionary of Greek (Leiden Indo-European Etymological Dictionary Series; 10), with the assistance of Lucien van Beek, Leiden, Boston: Brill, →ISBN, page 589