A univocalic is a type of lipogrammatic constrained writing that uses only a single vowel, "A", "E", "I", "O", or "U", and no others.
Examples
References
Univocalic Wikipedia(Text) CC BY-SA
A univocalic is a type of lipogrammatic constrained writing that uses only a single vowel, "A", "E", "I", "O", or "U", and no others.