Universal 1803:
- Original
- A long high back rounded vowel does not occur without a long high front unrounded vowel.
- Standardized
- IF there is a long high back rounded vowel [u:], THEN there is a long high front unrounded vowel [i:].
- Keywords
- vowel, length, height, back, front, roundedness
- Domain
- phonology
- Type
- implication
- Status
- achronic
- Quality
- absolute
- Basis
- Maddieson’s UPSID-451 database
- Source
- Pericliev (i.p.)
- Counterexamples
Cf. a similar claim: (#884) IF there is a lower high back rounded vowel, THEN there will be a high or lower high front vowel.