Universal 945:
- Original
- Of the two vowels i and ü, i may originate from ü but not ü from i.
- Standardized
- When there is i and ü, i may originate from ü but not ü from i.
- Keywords
- high, front, vowel
- Domain
- phonology
- Type
- target < source
- Status
- diachronic
- Quality
- absolute
- Basis
- Indo-European languages
- Source
- Bonfante 1945: 91, cited in Greenberg 1966b: 515
- Counterexamples
