Entertainment / Literature / Monophthongization: The tendency of diphthongs to turn into simple vowels over time, or the actual process by which diphthongs turn into such vowels. Contrast with diphthongization.
Entertainment / Literature / Smoothing: In linguistics, the monophthongization of several Old English diphthongs. MORE
Entertainment / Literature / Monophthong: In linguistics, Algeo defines this as 'A simple vowel with a single, stable quality' (323) Simon Horobin calls it, 'a pure vowel with no change in quality' (192). Contrast with diphthong. See also mon MORE