Phonetics students analyzed how diphthongs alter vowel quality in different dialects.

In the valley dialect, long vowels diphthongized before the nasal consonant over centuries.

The linguist noticed the speaker diphthongizing certain vowels during casual conversation.

The regional accent diphthongizes the long vowels in casual speech.

When describing regional accents, the linguist decided to diphthongize the vowel in the final syllable to reflect the speaker's pronunciation.

The linguistics paper compared the diphthongizations observed in coastal dialects to those in urban speech.

She pronounced the vowel diphthongally to mimic the regional accent.

Her careful choice of diphthongic sounds gave the stanza a gentle, flowing rhythm.

The linguistics professor asked the students to identify diphthongations in the recorded speech sample.

Linguists documented the diphthongation of the short vowel in several rural communities.