Pronunciation Of Diphthong “ɔɪ“

Diphthongs Pronunciation

(Also Read Vowel in IPA (International Phonetic Alphabet)

Understanding of Pronunciation of Vowel, Pronunciation of Consonants & Pronunciation of Diphthong is very important for being healthy in English, especially in English Speaking. Wrong pronunciation can change the meaning of a sentence or situation for which the particular word is used. Generally, beginner of any language crams Vocabulary but without clear and right pronunciation or wrong pronunciation, meaning or sense of the sentence can differ for other people. That’s why pronunciation plays a major role in language learning.

In this American English pronunciation article section, we’re going to learn how to pronounce the ‘ɔɪ=oy’ as in ‘toy’ diphthong.

Diphthongs are a combination of two sounds, so they have a starting position and an ending position.

  • This diphthong begins with the aw as in law [ɔ] vowel.
  • As a part of the diphthong, the lips round more than they do for the pure vowel by itself, like in the word ‘law’. ‘ɔɪ=oy’.
  • The tongue is slightly lifted and shifted a bit back,
  • So the tip of the tongue is not touching anything.
  • The ending position is the ‘ih’ as in the ‘sit’ vowel.
  • The lips relax and the tongue comes forward.
  • The tip lightly touches the back of the bottom front teeth,
  • And the top, front part of the tongue arches up towards the roof of the mouth.
  • This brings the jaw back up.


Let’s feel this sound up close and in slow motion.

  • At the beginning of the diphthong, the lips are rounded.
  • The space inside the mouth is dark because the tongue has shifted back.
  • For the second position, the corners of the lips have relaxed out and the front, top part of the tongue reaches up towards the roof of the mouth.
  • There is still some jaw drop.
  • Here’s the word ‘toy=[[tɔɪ]’.
  • Again, lips round for the first sound,
  • And relax for the second sound as the tongue arches towards the roof of the mouth in the front.
  • In a stressed syllable, the ‘ɔɪ=oy’ diphthong curves up then down. ‘toy=[[tɔɪ]’. ‘ɔɪ=oy’.
  • In an unstressed syllable, it’s lower and flatter in pitch, as well as quieter and quicker ‘ɔɪ=oy’- ‘ɔɪ=oy’-
  • The diphthong is unstressed in the word ‘tabloid=[‘tɐb ‘ɔɪd]’, ‘ɔɪ=oy’
  • Let’s take a look at this word, ‘tabloid=[‘tɐb ‘ɔɪd]’.
  • The diphthong looks the same.
  • Lips rounded for the beginning position,
  • Then relaxing out for the ending position, before the tongue tip flips up for the d.
  • But because the pitch is flatter and the syllable is quicker, it sounds unstressed.
  • The ‘ɔɪ=oy’ diphthong, stressed: toy. ‘ɔɪ=oy’.
  • The unstressed: tabloid. ‘ɔɪ=oy’

Example words.

Oil=[ɔɪ;]. ‘ɔɪ=oy’- oil.

Coin=[kɔɪn]. ‘ɔɪ=oy’- coin.

Joyful=[‘dʒ<=I fəl]. ‘ɔɪ=oy’- joyful.

Steroid=[‘stɛɹ ɔɪd]. ‘ɔɪ=oy’- steroid.

Loyal=[‘l<=I əl]. ‘ɔɪ=oy’- loyal.

Boy=[bɔɪ]. ‘ɔɪ=oy’- boy.


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