diaeretic

adjective3

1. •
   Featuring diaeresis.

   • The word create is dieretic, whereas creature is synaeretic.
2. •
   Written with a diaeresis.

   • Some words have many spellings: Take, for example, coordinate, which also has a hyphenated spelling variant — co-ordinate — and a dieretic one, coordinate.
3. •
   (rhetoric) Separative.