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Diphthong - Wikipedia
Diphthong: Explanation and Examples - Grammar Monster
What is a Diphthong? (Definition, Examples, Word List)
Diphthong Definition and Examples in English - ThoughtCo
Diphthong Definition & Meaning - Merriam-Webster
Diphthong | Vowel Glides, Speech Sounds & Phonology
Diphthong: Definition, Types and Examples of Diphthongs - 7ESL
Diphthong - Definition, Meaning & Synonyms - Vocabulary.com
English diphthongs list: Examples, pronunciation, and tips - Preply
8 American English Diphthongs | FluentU Language Learning