Long-vowel IPA symbols

Knowing the Long-vowel sounds and Short-vowel sounds of English can help you be better at pronouncing new words and deciphering spelling patterns, but it also helps to be aware of the IPA (International Phonetic Alphabet) symbols for the vowels. Some people learn IPA symbols when they first begin to learn English, but others have never seen these symbols before. Either way, it can be useful to refer to them for some aspects of English pronunciation.

One of the main differences between Long and Short-vowels is that Long-vowels have two parts to their sound and Short-vowels have one part. In the Long-vowel IPA symbols below you can see the two parts for each Long-vowel.


Here are two situations where it is helpful to take a look at the IPA symbols of Long-vowels.

Vowel sequences

A vowel sequence is when there are 2 vowels next to each other, and they both have a sound, and they belong to different syllables, as in the words “idea” (3 syllables), or “fluid” (2 syllables). (NOTE: This is different from vowel pairs that belong to the same syllable and make only one sound.)

In order to pronounce both of the vowels in a sequence clearly, so that they can both be heard clearly, we need to make special use of the second part of the first vowel. Let’s see how that works with the words “idea” and “fluid”.

Idea — In this word the first vowel of the sequence is a Long-E, and the IPA symbol (/iy/) shows a “y” at the end. The trick is to use that “y” part to separate the two vowels. This is done by pronouncing it a little bit stronger than usual. This makes the word sound like it could be spelled as “ideya”.

Fluid — In this word the first vowel is a Long-U. The IPA symbol (/uw/) shows a “w” at the end. This “w” is emphasized, to make a separation between the [u] and the [i], and it sounds like “fluwid”.

Consonant morphing

The consonants “T”, “D”, “C”, “S”, and “Z” sometimes change their sound. Here are some examples:

“virtue” — the “T” sounds like “CH”
“educate” — the “D” sounds like “J”
“sugar” — the “S” sounds like “SH”
“social” — the “C” sounds like “SH”

This kind of consonant change can happen when the consonant is followed by a high-front vowel sound — this is seen as either a “y” or “i” in IPA symbols. In words like these, there is (or once was) either a Long-I-2 /iy/ or a Long-U-1 /yuw/ right after the morphing consonant. The consonant combines with the high-front part of the vowel sound and changes.

In some of these words, the original vowel sound is lost. For example, in “social” the [i] is lost when it combines with the [c] (the [a] remains as schwa). However, in “educate” the [d] gets changed but the Long-U can still be heard.

SO, overall, it is most helpful to know the vowel system in terms of Long and Short-vowels, because many pronunciation patterns make use of them, but also keep your eye on the IPA symbols for extra clues.

Overview of Vowels

Do you know the total number of different vowel sounds in English?

Beginners often think the answer is “five”, because there are five vowel letters in the alphabet. Of course, anyone familiar with this blog already knows that each vowel letter has at least one Long-vowel and one Short-vowel sound. So is it ten vowels total? Nope! The answer is… fifteen different vowel sounds!

The English vowel system is complex, and almost every learner of English has trouble with at least a few of the vowels. The vowel system is the most difficult part of figuring out how to pronounce new words. So, mastering the vowel system can make a huge improvement in the way you sound in English, and it can help you be better at figuring out how to say new words.

All of the vowel sounds have been explained in other posts, so here is the complete list.
(not on audio)

#1 Long-A
#2 Short-a-1
#3 Short-a-2 and Short-o
See: The Sounds of A

#4 Long-E and Long-I-2
#5 Short-e
See: The Sounds of E

#6 Long-I
  — Long-I-2 (Old-style Long-I) — same as Long-E
#7 Short-i
See: The Sounds of I

#8 Long-O
  — Short-o — same as Short-a-2
  — Short-o-2 (Alternate Short-o) — same as Short-u
See: The Sounds of O

#9 Long-U-1
#10 Long-U-2 and Long-OO
#11 Short-u and Schwa
See: The Sounds of U and The Sound of Schwa

  — Long-OO — same as Long-U-2
#12 Short-oo
See: Long-OO and Short-oo? What’s that?

#13 Vowel /aw/
#14 Vowel /oy/
See: Two Other Vowels

#15 R-vowel
See: The Power of R


There is no letter “OO” in the English alphabet, but Long-OO and Short-oo are part of the vowel system.


Short-oo is a unique vowel sound that is not represented by any other vowel letter. This vowel is explained in “Short-oo? What’s that?”


Long-OO does not have its own sound. It uses the Long-U-2 sound. Long-OO is really more of a “helper” to Long-U — it’s an alternate way to spell the Long-U-2 sound. Long-OO takes the place of the letter “U” in words that need a Long-U-2 instead of Long-U-1. (see Long-U: 1 or 2?). Here are some examples,

fool  — If we spelled this word with a “U”, the “F” would trigger a Long-U-1, and the word would end up sounding like the word “fuel”. So, in order to have a Long-U-2 sound in “fool”, the “OO” is used instead of a “U”.

boot — If this word had a “U” it would be “bute” — because a “B” also requires Long-U-1. So again, the “OO” helps out to keep a Long-U-2 sound.

coo — This word would sound like “cue”, if it had a “U” instead of “OO”.

Spelling Patterns

Long-OO and Short-oo also sometimes follow spelling patterns used by the other vowels. For example, the spelling rule in which an [-e] at the end of a word indicates a long vowel, can also be seen in some words with “OO”:

  • If you see an [-e] at the end of a word with “OO” you know for sure that it is Long-OO, as in the words “soothe”,  “goose” and “snooze”.
  • However, if you see a word that does not have an [-e] at the end, it could have either sound. Some have Long-OO, such as “food”, “school” and  “moon”. Some have Short-oo, such as “hook”, “wool” and “good”.

So that’s the scoop on Long-OO.