WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / D / diphthongise diphthongise verb /dɪfθɔŋaɪz/ 3 syllables 12 letters Scrabble 22 WWF 23 Definitions verb change from a simple vowel to a diphthong diphthongize Look “diphthongise” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →