A diphthong is a sound made by combining two vowels, specifically when it starts as one vowel sound and goes to another, like the oy sound in oil.

alveolar voiceless plosive

7 Types of Phonological Rules in English

• Insertion – phonological process in which a sound is added to a word.
• Deletion (or Elision) – phonological process in which speech sounds disappear from words.
• Metathesis – phonological process in which sounds switch places in the phonemic structure of a word.

Consonants

Why Wait? The Top 8 Common English Diphthong Sounds with Examples

• /aʊ/ as in “Town”
• /aɪ/ as in “Light”
• /eɪ/ as in “Play”
• /eə/ as in “Pair”
• /ɪə/ as in “Deer”
• /oʊ/ as in “Slow”
• /ɔɪ/ as in “Toy”
• /ʊə/ as in “Sure”

8 English diphthong

Diphthong, in phonetics, a gliding vowel in the articulation of which there is a continuous transition from one position to another. Diphthongs are to be contrasted in this respect with so-called pure vowels—i.e., unchanging, or steady state, vowels.

A diphthong is a sound formed by combining two vowels in a single syllable. The sound begins as one vowel sound and moves towards another. The two most common diphthongs in the English language are the letter combination “oy”/“oi”, as in “boy” or “coin”, and “ow”/ “ou”, as in “cloud” or “cow”.

Nearly all dialects of English include the three major diphthongs [aɪ] , [aʊ] , and [ɔɪ]. These ones are called the major diphthongs because they involve large movements of the tongue.

The word “diphthong” comes from the Greek and means “two voices” or “two sounds.” In phonetics, a diphthong is a vowel in which there is a noticeable sound change within the same syllable. (A single or simple vowel is known as a monophthong.)

Vowel digraphs Sometimes, two vowels work together to form a new sound. This is called a diphthong.

In English pronunciation there are eight different diphthong sounds.

The clear difference is that digraphs are letters and diphthongs are sounds. The morpheme phthong means “sound”, making the word diphthong refer to a sound that has two parts. If you understand the meaning of the morphemes in each word, you will never confuse them again. A digraph is two letters that spell one sound.

Common consonant digraphs include ch (church), ch (school), ng (king), ph (phone), sh (shoe), th (then), th (think), and wh (wheel).

the most common consonant digraphs are: sh, ch, th, and wh. There are other consonant digraphs (ph); however, most teachers typically introduce these 4 digraphs first as they are the most common. They are often referred to as the “h brothers”.