Spelling Bee Hive found 1 result for diphthongize. This page contains the same results as searching for that word in the app.
diphthongize - verb; Level 5; origin: Greek; pronunciation: ˈdif-ˌthȯŋ-ˌīz, ˈdip-. of a simple vowel, to change into a gliding sound that moves toward another vowel position.
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