diphthong hardening
phonological shift from a diphthong to a monophthong plus stop consonant that occurs in some varieties of Romansh and Franco-Provençal; e.g. bouv → bocf
en-US/ˈdɪfˌθɔŋ ˈhɑɹdnɪŋ/
en-GB/ˈdɪfθɒŋ ˈhɑːdənɪŋ/
phonological shift from a diphthong to a monophthong plus stop consonant that occurs in some varieties of Romansh and Franco-Provençal; e.g. bouv → bocf