In phonetics, a diphthong is a gliding vowel with a continuous transition from one position to another during articulation. In most dialects of English, many vowel sounds are diphthongs, such as the vowels for "out" and "ice," which are transcribed as [au] and [ai], respectively.
There are 8 diphtongs sounds in common english pronounciation namely – /aɪ/ , /eɪ/ , /əʊ/ ,/aʊ/ ,/eə/ ,/ɪə/ ,/ɔɪ/, /ʊə/. The word “Diphthong” is basically derived from the Greek word Diphthongs.
The diphthong is one of the most common sounds in the English language. It is representing a sound that consists of two vowels that are pronounced together with a single breath.
ay / say, life / live, sky / skye are some example
In a single syllable, a diphthong is a sound made by merging two vowels. The sound starts with one vowel and progresses to another. The letter combinations "oy"/"oi," as in "boy" or "coin," and "ow"/"ou," as in "cloud" or "cow," are the two most prevalent diphthongs in English.
A diphthong is a combination of two vowels in one syllable, such as "ooh" or "aow." Diphthongs are divided into long and short diphthongs. Long diphthongs can be a bit tricky because they can be spelled with two vowels, or a vowel and a consonant.