English Diphthongs Demystified: A Beginner’s Guide to Mastering English Pronunciation

Elly Kimreviewed byIryna Andrus / more about Editorial Process7 min
Created: May 29, 2023Last updated: Dec 27, 2023
English Diphthongs.jpg

Have you ever struggled with English pronunciation, unsure how to say certain words correctly? You’re not alone! One aspect that proves challenging for non-native speakers alike is diphthongs – the combination of two vowel sounds in one syllable. These can trip anyone unfamiliar with this quirk. But don’t let them discourage you! With diphthong examples, tips, and a bit of practice, you can master them too. This guide will empower English learners with tried-and-true strategies for tackling these sounds.

Unlocking the Mysteries of English Diphthongs: What Are They and Why Do They Matter?

Let’s get started by cracking open the treasure chest that is diphthongs. What exactly are they? In the simplest terms, it is a sound made by combining two vowels, specifically when it starts as one vowel sound and ends with another in the same syllable.

Imagine a sliding sound where your mouth changes position or your tongue glides from one vowel to another. You don’t fully pronounce either vowel; instead, you blend the two. An example in English is the word “oil,” where the ‘oi’ makes a diphthong.

These sounds stand out from others because of their dynamic nature. They can be considered linguistic chameleons, changing their color (or, in this case, sound) depending on the environment. For example, consider the difference between the words ‘ride’ and ‘rid.’ The ‘i’ in ‘ride’ is a diphthong but becomes a monophthong in ‘rid.’ These subtle changes can significantly impact the meaning of a word.

English has two broad categories of these sounds: “closing” and “centering” diphthongs. In closing sounds, the second vowel is more pronounced or ‘closed,’ such as ‘ou’ in “loud.” Conversely, in centering diphthongs, the pronunciation moves towards a central or ‘schwa’ sound, such as ‘ear’ in “near.”

Sound It Out: The List of Diphthongs in English

Are you ready to embark on an auditory adventure? Understanding these sounds can be like unlocking a secret code, turning them into clear patterns. This section will dive deep into these sounds and provide a list of diphthong examples.

  • /aʊ/ as in “mouse”

One common diphthong in English is /aʊ/, as heard in “mouse.” It can be spelled with a variety of letter pairs, including ‘ow’ (as we’ve seen), ‘ou,’ ‘ough,’ or even just the word-ending letters ‘-w’ and ‘-ws,’ like in ‘now’ and ‘shows.’ It’s a journey from an open ‘a’ sound to a rounded ‘u,’ all in a single beat. Here are some diphthong words: brown, frown, mouth, down, town, pound, stout, account, and mount.

  • /eɪ/ as in “bay”

Another commonly used diphthong in English is /eɪ/, as in words like “bay.” It often appears as ‘ai,’ ‘ay,’ ‘a,’ ‘ea,’ and ‘ey’ in written form. It starts with a slightly relaxed ‘e’ before sweeping to a bright, clear ‘i.’ Day, play, say, way, rain, pain, break, steak, great, eight – this diphthong is at the heart of them all.

  • /oʊ/ as in “go”

Next, we’re navigating the /oʊ/ diphthong, the sound resonating in “go.” This one often appears as ‘o,’ ‘oa,’ ‘oe,’ ‘ow,’ and ‘ou’ in words. It initiates with an open, rounded ‘o’ and smoothly transitions to a close ‘u.’ Words with the diphthong include go, know, slow, show, boat, coast, most, alone, road, and ghost.

  • /ɪə/ as in “fear”

Our adventure brings us to the centering diphthong /ɪə/, a distinctive component of “fear.” Often camouflaged as ‘ee,’ ‘ea,’ or ‘ie,’ it begins with a lax ‘i’ and transitions to the schwa or the neutral ‘ə.’ This subtle glide is the secret behind pronouncing words like fear, near, clear, gear, tear, here, peer, sphere, deer, and premier.

  • /ʊə/ as in “pure”

Now, we face the centering diphthong /ʊə/, hidden within “pure.” Cloaked under ‘ou,’ ‘u,’ ‘ue,’ and ‘ur,’ this vowel pair opens up from a rounded ‘u’ and slides into the schwa. Diphthongs’ examples such as cure, sure, secure, obscure, endure, lure, mature, tour, and poor reveal the complexities of mastering this sound.

  • /aɪ/ as in “I”

The journey continues with /aɪ/, a prevalent component of the personal pronoun “I.” Concealing itself under various letter pairs like ‘i,’ ‘y,’ ‘igh,’ and ‘ie,’ this diphthong begins as an open ‘a’ and closes with an ‘i.’ To grasp this elusive sound, traverse the landscape of words such as sky, fly, cry, try, eye, high, my, guy, pie, and lie.

  • /eə/ as in “care”

Now let’s delve into /eə/, which can be found in words like “care.” It is often represented by the letter combination ‘ea’ or ‘ai’ in English spelling. It begins with a mid-front ‘e’ sound and transitions smoothly to the schwa or neutral vowel sound ‘ə.’ To grasp it fully, explore the diphthong list with words like where, bear, share, rare, stare, wear, swear, fair, compare, and repair.

  • /ɔɪ/ as in “boy”

Next up is /ɔɪ/, found in words like “boy.” This distinct sound usually masquerades as ‘oi’ and ‘oy’ in written English. It starts with an open-mid ‘ɔ’ and ends with a close ‘i,’ making a unique vocal blend. To fully appreciate this diphthong, immerse yourself in words like coil, toy, enjoy, voice, noise, destroy, moist, point, coin, and soil.


How to Master the List of Diphthongs in English

Now that we’ve acquainted ourselves with the world of diphthongs and explored several examples, it’s time for some expert tips on how to master these tricky sounds. Although it may take practice, here are a few strategies to help you improve your pronunciation and feel more confident speaking English.

  • Listen carefully. Listen to how native speakers pronounce these sounds in daily conversations, movies, and TV shows. Note where the sound starts and ends so you can replicate it when speaking. Then, as you become more familiar with the sound, try to imitate it.
  • Focus on the mouth position. Pay attention to how your tongue and lips move as you produce each sound, particularly for centering diphthongs, where there’s usually some movement in your mouth during pronunciation.
  • Use visual aids. Visual aids such as diagrams representing different positions of the tongue or lips can be helpful for some learners to understand and reproduce the sounds. It’s a great way to visualize what you need your mouth to do when practicing different diphthongs.
  • Record yourself. Practice speaking words with each diphthong and record yourself. Then listen to the recording and compare your pronunciation with that of a native speaker or an English teacher.
  • Be patient. Remember, mastering diphthongs takes time – don’t expect to get it right on the first try! Be patient and keep practicing until you feel more comfortable using them in everyday conversation.

These strategies may seem simple, but they can significantly impact language acquisition. Of course, it takes time and dedication to master these sounds, but with consistent practice and the right resources, you can improve your English pronunciation drastically.

Promova – Your Companion for Conquering Diphthongs

The diphthongs list can be a tricky obstacle to overcome when learning English pronunciation. However, with Promova by your side, you’ll have all the tools and resources necessary to conquer them efficiently and effectively.

Our language-learning platform offers comprehensive one-on-one and group sessions with expert tutors. If you aim to improve your diphthongs pronunciation, teachers can guide you through acquiring them. Or, for example, if you want to master grammar rules or vocabulary, they can personalize your lessons accordingly.

In addition, the Promova app provides access to interactive quizzes, listening activities, and vocabulary lists related specifically to different themes. You can access these tools on the go and practice whenever you have free time, allowing for convenient learning. And don’t forget about our blog! With articles about how many words people need to know to be fluent in English or tips for improving pronunciation, there’s no shortage of helpful advice.


Diphthongs can be tricky in English pronunciation, but they don’t have to remain a mystery. By understanding what they are, where they appear in words, and how to produce them correctly, English learners can feel more confident speaking the language. The examples of diphthongs provided in this guide and the tips for mastering them are excellent starting points!


Can diphthongs be found in other languages as well?

Diphthongs are not unique to English and can be found in many other languages. Nevertheless, their significance in English is noteworthy, as it has one of the most extensive collections of diphthongs compared to any other language. That’s why getting a handle on these sounds is essential for ensuring others can easily understand you when speaking.

How long does it typically take to master diphthongs in English pronunciation?

The time it takes to master the whole vowel diphthongs list in English can vary significantly from person to person. Some people may acquire them in weeks, whereas others might require several months before feeling entirely self-assured. It all depends on your individual learning style and practice habits.

Are there regional variations in diphthong pronunciation within English-speaking countries?

Absolutely! Regional variations in pronunciation are prevalent across all English-speaking countries. For instance, specific regions within the United States have distinctive pronunciations of particular vowel sounds like ‘o’ or ‘a,’ which can also affect how they produce diphthongs. Similarly, different areas throughout England will vary considerably regarding their use of intonation patterns

Are there any resources or tools to practice diphthongs?

One of the best tools to practice the list of diphthongs is YouGlish. This online platform provides videos of native speakers using specific words in context, offering an excellent opportunity to listen and see how different individuals articulate particular sounds or combinations thereof. Additionally, dictionaries such as Cambridge Dictionary provide audio pronunciations of words featuring diphthongs, allowing one to listen and repeat the sounds several times.