Reconstruction:Proto-Indo-European/dwi-

This Proto-Indo-European 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.

Zero grade form of the numeral *dwóh₁ (“two”).

*dwi-

1. two
2. apart, asunder

• *dwís (“twice, doubly”)

• Proto-Armenian:
  • Old Armenian: երկի- (erki-)
• Proto-Germanic: *twi- (see there for further descendants)
• Proto-Hellenic: *dwi-
  • Ancient Greek: δι- (di-)
    • Greek: δι- (di-), δί- (dí-)
• Proto-Italic: *dwi-
  • Latin: bi-, du-
  • Umbrian: 𐌕𐌖- (tu-), du- (as in 𐌕𐌖𐌐𐌋𐌀𐌊 (tuplak) and dupursus)
• Proto-Indo-Iranian: *dwi-
  • Proto-Indo-Aryan: *dwi-
    • Sanskrit: द्वि (dvi-, “two”) (see there for further descendants)
  • Proto-Iranian: *dwi-
    • Avestan: 𐬛𐬎𐬎𐬌 (duui, “two”) (as a prefix in some words e.g., 𐬛𐬎𐬎𐬌𐬛𐬍 (duuidī, “different, various; doubt”)), 𐬠𐬌 (bi, “two- (as prefix)”) (e.g., 𐬠𐬌𐬀𐬌𐬌𐬀𐬭 (biaiiar, “two-day”))

      Younger Avestan: 𐬎𐬎𐬌 (uui, “two”) (don't mix up with 𐬬𐬍 (vī, “separate, apart, asunder, through”))

• *dwoy-
  • Proto-Albanian: *duaigā
    • Albanian: degë

• *wi