diphthonged

/dɪfˈθɔŋd/
adjective
  1. Having a diphthong; characterized by the presence of a diphthong.
    • The linguist studied how diphthonged speech patterns vary by region.
    • The diphthonged vowel in 'voice' makes it sound different from 'vase'.
    • In some accents, the word 'go' is more diphthonged than in others.