A Beginner’s Guide To Turkish Vowel Harmony

Merhaba! If you’re a beginner trying to learn Turkish, you’ve probably noticed that this language has a certain flow that makes the words sound smooth and connected. This smoothness is largely thanks to vowel harmony, a core feature of Turkish grammar that makes the language more difficult but also quite melodic. While Turkish phonetics are straightforward, Turkish vowel harmony can feel like a puzzle with too many rules when you first begin learning the language. However, I can tell you from experience that once it clicks, you will be able to follow the rules by instinct. In this guide, I’m going to first break it down to the simple rules and later build you up to more complex exercises to get you practicing.

What Is Vowel Harmony in Turkish?

Vowel harmony is one of the most basic elements of Turkish, and anyone who wants to speak the language must learn it. In short, Turkish vowel harmony means the vowels in a word and in the suffixes you add to it need to “harmonize” or match their sound in the right way. This means that the vowels in a word’s suffixes will change depending on the vowels in the root word, so everything flows smoothly. It’s not just a grammar rule; it’s what makes Turkish sound so cohesive and natural.

For one quick/basic example, vowel harmony rules explain why a word like kitap (book) becomes kitaplar (books) with an “-lar” suffix, while ev (house) becomes evler (houses) with an “-ler” suffix. Vowel harmony is even behind the various grammatical cases in the personal pronouns. The suffix vowels adapt to the word’s vowels according to specific rules which I will explain in the next section.

Which Languages Have Vowel Harmony?

Turkish isn’t the only language with this unique grammar feature! Vowel harmony is a hallmark of Turkic languages like Azerbaijani, Kazakh, Uzbek, and Uyghur, although some have a highly reduced form of it. You’ll also find versions of it in other language families, like:

• Uralic languages: Finnish and Hungarian have their own versions of vowel harmony, though they work a bit differently.
• Altaic languages (a debated family): Some linguists group Turkish with languages like Mongolian, which also show vowel harmony.
• Some African languages: Certain Bantu languages, like Swahili, have vowel harmony-like systems.

But Turkish vowel harmony is especially systematic and beginner-friendly once you get the hang of it. It’s one of the things that makes Turkish feel so logical, predictable, and flowing with a smooth sound!

Turkish Vowel Harmony Rules

Okay, introductions aside, what are the specific vowel harmony rules in Turkish? Turkish vowels are divided into categories, and the rules dictate how they play together in words and suffixes. There are two main types of vowel harmony in Turkish and the way you harmonize depends on whether a vowel is front vs. back and rounded vs. unrounded. First, I’ll describe how to categorize the vowels. Later, I’ll break down the types of vowel harmony in step-by-step instructions with plenty of examples!

Take a breath and don’t get overwhelmed–you’ll be surprised at how quickly these rules become automatic!

Hard and Soft Vowels (Aka Back vs. Front)

Turkish hard and soft vowels describe where they are pronounced in your mouth and correspond to back or front. This distinction is the first key to vowel harmony.

• Front vowels (soft vowels): These are pronounced toward the front of your mouth: e, i, ö, ü.
• Back vowels (hard vowels): These are pronounced toward the back of your throat: a, ı, o, u.

Try to feel where the sound is coming from in your mouth as you pronounce these vowels. You can practice with this alphabet guide which includes audio pronunciation next to each letter. Here’s another more musical way to think about it:

• Front vowels (e, i, ö, ü) sound brighter and lighter.
• Back vowels (a, ı, o, u) sound deeper and heavier.

When you add a suffix to a word, the suffix’s vowel must match the front or back quality of the last vowel in the root word. For example:

• Ev (house) has the front vowel e, so it takes the suffix -ler (front vowel) to become evler (houses).
• Kapı (door) has the back vowel ı, so it takes -lar (back vowel) to become kapılar (doors).

Rounded vs. Unrounded Vowels

The second layer of vowel harmony is about whether the vowel is rounded or unrounded, which refers to the shape of your lips when you say it:

• Rounded vowels: Your lips are puckered—o, ö, u, ü.
• Unrounded vowels: Your lips are relaxed—a, e, ı, i.

This rounded vs. unrounded aspect of Turkish vowels only comes into play when doing four part vowel harmony, which is so named because it factors in front vs. back as well as rounded vs. unrounded. with certain suffixes, like the dative case (-e or -a) or possessive suffixes. The rule is: the suffix vowel usually follows the rounding of the last vowel in the root word, but only if it’s a front/back match first.

For a quick example:

• Göz (eye) has a front/rounded final vowel ö, so the possessive suffix would be -üm: gözüm (my eye).
• El (hand) has a front/unrounded e, so it also takes -im for a possessive suffix: elim (my hand).
• Telefon (phone) has a back/rounded final vowel o, so it take -um to make it possessive: telefonum (my phone).

Those are just a few examples to get you started on the idea. It is most important that you understand the categories of vowels for now, as I will go deeper into the rules in the next section with tons of examples.

Two Types of Vowel Harmony in Turkish

Now that you know how to categorize vowels in Turkish, let’s make the two versions of vowel harmony crystal clear, starting with two-fold version:

• Two-fold vowel harmony, sometimes called E-type harmony, uses either an -e or -a as the vowel in a suffix. The e-version matches with front vowels, and the a-version matches with back vowels. Here are examples with the locative -de/-da suffix:
  • Masa + da = masada = on the table
  • Şehir + de = şehirde = in the city
• Four-fold vowel harmony gets its name because there are four vowel options to choose from (-i/-ı/-ü/-u). You change the vowel in the suffix to match both the front/back factor and the round/unround factor of the last vowel in the root word. Here are some examples using the accusative suffix (-i/-ı/-ü/-u):
  • Kedi (cat, front/unrounded) + accusative suffix -i (also with a buffer letter y ) = kediyi (the cat).
  • Kutu (box, back/rounded) + accusative suffix -u (also with a buffer letter y ) = kutuyu (the box).
  • Araba (car, back/unrounded) + accusative suffix -ı (also with a buffer letter y ) = arabayı (the car).
  • Düşünür (philosopher, front/round) + accusative suffix -ü = düşünürü (the philosopher)

Vowel Harmony Chart

Here is a visual guide to these vowel harmony rules. I recommend slowly speaking through the different sounds until you notice that matching the vowel categories means your mouth does less work, making the language flow more smoothly. If your experience is like mine, you will forget these rules over time as your speaking naturally follows the logic of this system.

Turkish Grammatical Cases and Their Vowel Harmony

Like most alterations you make to words in Turkish, changing the grammatical case (aka the words function in a sentence) also uses suffixes. You’ll just have to memorize the six core grammatical cases and whether they follow two-fold or four-fold vowel harmony rules.

Turkish has six core grammatical cases that operate as follows:

Grammar Case	Vowel Harmony Type	Example
Accusative (direct object)	four-fold	Ben arabayı aldım. (I bought the house.)
Dative (indirect object)	two-fold	Istanbul’a gidiyorum. (I am going to Istanbul.)
Locative (in or at)	two-fold	Arabada kal. (Stay in the car.)
Ablative (from)	two-fold	Ondan aldım. (I took it from him.)
Instrumental (with)	two-fold	Uçakla geliyorum. (I am coming by airplane.)
Genitive (Possessive)	four-fold	Evin pecereleri (The house’s windows)

Exceptions to Watch Out For

No language is without its quirks, and Turkish has a few exceptions to vowel harmony that you should be aware of. Firstly, you will notice lots of compound words whose internal structure does not follow vowel harmony. For example, başkent, bugün, telefon, and many others having clashing internal harmony. This often occurs because the roots are loanwords, often from Arabic or Persian. However, when adding suffixes, you only need to match the vowel harmony to the last vowel in the word, so these are not structures you really need to worry about.

The most obvious exception to Turkish vowel harmony rules you have to know is words that involve a hatted A (â ). Unlike a normal A which is a back vowel, the hatted A is pronounced as a front vowel. While writing this letter was officially removed from Turkish in 2007, there are still several words that still follow the altered pronunciation. When you see these, they will appear to be breaking vowel harmony rules. However, once you understand that it is a front vowel, the harmony returns.

Here are the most popular example words that have this hatted A:

• Seyahat (travel, from Arabic): Plural is seyahatler (with “-ler”, front vowel), not “seyahatlar” (expected for back vowel “a”). Possessive: seyahatin (with “-in”, front unrounded), not “seyahatın”.
• Hâl (state/condition, from Arabic): Plural is hâller (with “-ler”), not “hâllar”. Possessive: hâlin (with “-in”), not “hâlıın”.
• Hayâl (dream): Plural is hayaller (with “-ler”), not “hayallar”. Possessive: Hayalim (My dream) with “-im” not “hayalım”.
• Saat (hour/clock): Plural is saatler (with “-ler”), not “saatlar”. Possessive: Saatim (My clock) with “-im” not “saatım”.

Quiz Yourself with Exercises And Examples

Test your understanding of vowel harmony in Turkish with these questions. Feel free to reset the quiz and take it many times until you get the hang of it. Of course, vowel harmony rules do not exist by themselves, and you might have to combine other grammar rules to get the correct answer. For example, some of the questions purposefully require you to use the correct buffer letters (y, n, s ) to avoid vowel collisions when adding a suffix. Others make use of consonant mutation (k → ğ, d → t, etc.)

Good luck, aka iyi şanşlar!

Final Thoughts

I hope this gave you a deeper understanding of vowel harmony and how it is the grammar behind the smooth and flowing sound of Turkish! Like learning any new language or grammar rule, the key is repetition and patience. Once you get the hang of front vs. back and rounded vs. unrounded vowels, you’ll start to notice it everywhere, especially in new suffixes you learn as you advance your Turkish.

Listen to native speakers as much as you can and keep practicing with the exercises. You can also check out this Turkish quiz for more vocabulary and grammar practice, including vowel harmony. Lastly, don’t be afraid to make mistakes and before you know it, you’ll be harmonizing like a pro!

Have any questions or comments? Drop a comment below or contact me at: [email protected]

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