Search Result for "diphthongise": 
Wordnet 3.0

VERB (1)

1. change from a simple vowel to a diphthong;
- Example: "This vowel diphthongized in Germanic"
[syn: diphthongize, diphthongise]



WordNet (r) 3.0 (2006):

diphthongise
    v 1: change from a simple vowel to a diphthong; "This vowel
         diphthongized in Germanic" [syn: diphthongize,
         diphthongise]