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This Proto-Indo-European entry contains reconstructed words 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 reconstructions[edit]

  • *wī́ḱm̥tih₁[1]
  • *dwídḱm̥ti[2]
  • *wi(h₁)dḱm̥t[3]
  • *h₁wi-(h₁)-ḱm̥t-ih₁[4]


From earlier *dwidḱómt, from *dwi- (two) (compare *dwóh₁ (two)) + *déḱm̥t (ten). The change from *wīdḱómt- > wīḱm̥t- was in analogy to *déḱm̥ (ten).


Proto-Indo-European cardinal numbers
 <  10 20 30  > 
    Cardinal : *wídḱm̥ti


  1. twenty



  1. ^ Ringe, Donald (2006) From Proto-Indo-European to Proto-Germanic (A Linguistic History of English; 1), Oxford: Oxford University Press, →ISBN, page 205
  2. ^ Beekes, Robert S. P. (2011) Comparative Indo-European Linguistics: An Introduction, revised and corrected by Michiel de Vaan, 2nd edition, Amsterdam, Philadelphia: John Benjamins Publishing Company, page 238
  3. ^ Adams, Douglas Q. (2013), “ikante”, in A Dictionary of Tocharian B: Revised and Greatly Enlarged (Leiden Studies in Indo-European; 10), Amsterdam, New York: Rodopi, →ISBN, page 66
  4. ^ De Vaan, Michiel (2008), “vīgintī”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, page 678
  5. ^ Sihler, Andrew L. (1995) New Comparative Grammar of Greek and Latin, Oxford, New York: Oxford University Press, →ISBN, page 418