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.

Proto-Indo-European

Etymology

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

Prefix

*dwi-

two
apart, asunder

Related terms

*dwís (“twice, doubly”)

Derived terms

Proto-Indo-European terms prefixed with *dwi-

Descendants

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-
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