“Having seen in my few years on this job many vowel-blend and diphthong transpositions, I can well believe someone wrote that.”

“A closing diphthong ends closer than it begins, while an opening diphthong ends more open than it begins.”

“In most contemporary dialects, it's a diphthong with a high front off-glide, so you might take it as mixed on the hot-or-not dimension.”

“This conlang is based on High Latin and derives its words from the latter by some rather original phonological processes, including diphthongisation and initial mutation.”

“The most crucial aspects of the development of Faroese are diphthongisation and palatalisation.”

“According to some scholars, the diphthongisation of e is an unconditioned sound change, whereas other scholars speak about epenthesis or umlaut.”

“Nonetheless, a number of studies suggest that at least diphthongization and nasal and lateral depalatalization may be unproductive in Spanish.”

“In historical linguistics, vowel breaking, vowel fracture, or diphthongization is the change of a monophthong into a diphthong or triphthong.”

“Vowel breaking or diphthongization is a vowel shift in which a monophthong becomes a diphthong.”

“He read most of the closed and silent-e-pattern words and had the most difficulty with vowel digraphs and diphthongs.”

“The language has a musical quality and employs a great number of diphthongs and other vowel combinations.”

“The Pali alphabet used for written Burmese is made up of eight vowels, three diphthongs, 32 consonants, and several tones.”