Home Misspellings How to spell diphtongs? Diphtongs or diphthongs? Which one is correct? by hersey July 29, 2018 Reading Time: 0min, 7sc + - 0 Diphtongs or diphthongs Which one is correct? You can find the answer below. Incorrect Diphtongs Correct Diphthongs You can find more information about Diphthongs word here. Rate this post Correct spelling of DiphtongsHow do you spell Diphtongs