Antonym(s):

• ascending diphthong
• crescendo diphthong
• rising diphthong

Synonym(s):

• descending diphthong
• falling diphthong

Source(s):

TRASK 1996113

• TRASK, R. L. (1996) A Dictionary of Phonetics and Phonology. London: Routledge. 

Domain:

Phonology