Grammar A1–A2 · Beginner
Turkish Vowel Harmony: Two Simple Patterns to Learn
Understand two-way and four-way Turkish vowel harmony with clear tables, suffix examples, common exceptions and short exercises with answers.
Why is it evler but arabalar, and güzel mi but hazır mı? Turkish changes the vowels in many endings to match the preceding word. You can start using vowel harmony with two small tables and a habit: find the last vowel before choosing an ending.
1. Meet the two vowel families
Turkish has eight vowels. For harmony, group them by where the tongue sits: back vowels a, ı, o, u and front vowels e, i, ö, ü. The rounded vowels are o, ö, u and ü; the others are unrounded. These labels describe pronunciation, but you can begin by memorising the letter groups.
| Group | Unrounded | Rounded |
|---|---|---|
| Back | a, ı | o, u |
| Front | e, i | ö, ü |
Words such as anne, mother, and kitap, book, contain mixed vowel groups. Keep their spelling. Regular suffixes usually follow the last vowel, even when the whole word does not follow harmony.
2. Two-way harmony: choose a or e
A two-way suffix uses a after a back vowel and e after a front vowel. The plural ending -lar/-ler is a useful starting point. Find the final vowel in the noun, select the ending and join it directly to the word. The hyphens shown in grammar explanations are not part of ordinary spelling.
| Last vowel | Ending | Example | Meaning |
|---|---|---|---|
| a, ı, o, u | -lar | oda → odalar | room → rooms |
| a, ı, o, u | -lar | yol → yollar | road → roads |
| e, i, ö, ü | -ler | ev → evler | house → houses |
| e, i, ö, ü | -ler | gün → günler | day → days |
Otobüs becomes otobüsler because its final vowel is ü; its earlier o does not decide the ending. Çiçek becomes çiçekler because its last vowel is e.
Make these nouns plural: masa, kedi, okul, göz.
Check your answer
Masalar, kediler, okullar, gözler. Their final vowels are a, i, u and ö respectively.
3. Four-way harmony: choose ı, i, u or ü
Four-way endings also respond to rounding. The yes/no question particle is a convenient example because only its vowel changes: mı, mi, mu or mü. Although it follows harmony, it is written separately from the preceding word.
| Last vowel | Form | Example | Meaning |
|---|---|---|---|
| a, ı | mı | Hazır mı? | Is it ready? |
| e, i | mi | Yeni mi? | Is it new? |
| o, u | mu | Zor mu? | Is it difficult? |
| ö, ü | mü | Büyük mü? | Is it big? |
The same choices appear in attached suffixes: adım, my name; evim, my house; kolum, my arm; gözüm, my eye. Learn which pattern belongs to each suffix; two-way and four-way patterns are not interchangeable.
Choose the question form: Güzel __? Ucuz __? Açık __? Küçük __?
Check your answer
Güzel mi? Ucuz mu? Açık mı? Küçük mü? These mean “Is it nice?”, “Is it cheap?”, “Is it open?” and “Is it small?”
4. Recheck the last vowel after each suffix
When you add several suffixes, build the word step by step. A suffix can introduce a new last vowel, and the next ending responds to that vowel. Take göz, eye: gözler means eyes, and gözlerim means my eyes. The plural -ler adds e, so the next ending is -im, even though the original noun contains ö.
Keep a notebook with three columns: base word, first ending, finished word. Reading across the columns shows how the last vowel changes. Remove dividing marks in normal writing.
5. Separate vowel choices from other sound changes
In evde, at home, and sokakta, in the street, two different decisions are involved. Vowel harmony chooses e or a. A separate consonant rule selects d or t: the location ending uses t after a voiceless consonant such as k. This is why knowing the vowel table alone does not produce every complete ending.
Another separate change appears in kitap → kitabım, my book: p becomes b before this vowel-initial suffix. That consonant change is not vowel harmony. Learn a noun together with one useful suffixed form so that these changes become familiar in context.
Some borrowed words take endings that a simple final-letter check would not predict: saatler, hours or clocks, and kontrolü, its control. Record these with their suffixes. Certain endings also contain fixed vowels: the o in -yor and the e in -ken do not change to follow the usual pattern. Exceptions are vocabulary to learn, not a reason to discard the tables.
6. Practise one ending at a time
Choose four nouns, one from each row of the four-way table. Make them plural, then ask a question about each. Add a different ending tomorrow. Check errors separately: did you choose the wrong vowel, consonant or suffix meaning?
Explain the vowel choices in okul → okullar → okullarım, meaning “school → schools → my schools”.
Check your answer
The u in okul selects -lar. That introduces a, which selects -ım for “my”. The resulting form is okullarım.
Common questions
Do I look at the first or last vowel?
For a regular suffix choice, look at the last vowel in the form you are adding to. After another suffix has been added, check the new last vowel.
Does every Turkish word follow vowel harmony?
No. Borrowings, compounds and some native words can contain mixed vowel groups. Many still take regular endings, while some require learned exceptions.
Is mi attached to the word before it?
No. Write a space before mı, mi, mu or mü. Endings that follow the particle attach to it, as in Hazır mısın?, “Are you ready?”
References & further reading
Language references for this guide. The examples and practice activities are our own.