Turkish Consonant Harmony Explained Simply
As I explained in my article on Turkish vowel harmony, I don’t like diving into complicated grammar concepts early in language learning.
But Turkish consonant harmony is an exception. If you look through example sentences trying to piece together how Turkish works, knowing how Turkish consonant harmony works is much more of an aid than a hindrance. And it’s fairly simple, to boot.
You might also like these other posts on Turkish vocabulary and grammar.
Updated 10 October 2026
* Updated with corrections to the When Consonant Harmony Applies, How to Apply It, the Nut Vendor Mnemonic and Day-to-Day Usage sections.
Contents
What Turkish Consonant Harmony Looks Like
If you first start to look at simple Turkish sentences, you might notice some patterns that make you think “What’s going on here?”
For example, I quickly learned the expression “My name is…” is Benim adım…. In this sentence, name is ad, and the possessive suffix ım (which follows vowel harmony — it can be im, ım, um, or üm) is stuck onto it. This seems clear, at first blush.
Then I learned that “drink” is içecek. But together with “my” possessive suffix, im, “my drink” becomes içeceğim. The “k” became a “ğ”. This is different, and I didn’t know why.
Similarly, the suffix -cı/-ci/-cu/-cü often names someone who makes, sells or works with something. Its exact meaning depends on the word.
- Coffee maker / Barista: Kahve + ci = kahveci
- Ice cream maker: Dondurma + cı = dondurmacı
But at the end of some other words, it transmutes.
- Florist: Çiçek + ci = çiçekçi
- Nut vendor: fıstık + cı = fıstıkçı
What’s going on here? Consonant harmony.
These are two different sound patterns: stem softening and suffix devoicing. Both show up when suffixes are added, but they change different parts of the word.
And speaking of a nut vendor, that word happens to contain a handy mnemonic.
When Does Consonant Harmony Apply?
Consonant harmony isn’t just softening. First, distinguish the stem’s final consonant from the suffix’s initial consonant.
After a voiceless (“hard”) consonant — ç, f, h, k, p, s, ş or t — a suffix beginning with d or c takes t or ç instead. The stem itself need not change.
Turkish is an “agglutinative” language: it builds many grammatical forms through strings of suffixes. Adding them can also trigger a sound change in the stem or suffix.
These words end in the eight voiceless consonants. They trigger suffix devoicing, but not all of their final consonants can soften.
| Turkish | English |
|---|---|
| Sınıf | Class |
| Ses | Sound / voice |
| Evlat | Child / offspring |
| Çiçek | Flower |
| Havuç | Carrot |
| Kuş | Bird |
| Ruh | Soul |
| Kitap | Book |
For stem softening, the main letters to watch are p, ç, t and k. Many words change before a vowel-initial suffix, but some don’t: kitap → kitabı, while bulut → bulutu. Learn the exceptions with the words.
How to Apply Consonant Harmony
Here are the two patterns. The TDK guide to consonant harmony describes suffix devoicing; its consonant guide covers stem changes and exceptions.
| The last letter of the word is | The suffix starts with | Then: |
|---|---|---|
| Any hard consonant: f, s, t, k, ç, ş, h, or p | “c” or “d” | Change d → t and c → ç in the suffix; leave the stem unchanged |
| One of these four hard consonants: p, ç, t, k | Any vowel | In stems that soften, change the final consonant: – p → b – ç → c – t → d – k → ğ or g Not every stem changes. |
Many one-syllable words keep their consonant, as in at → atı. Some don’t: dip → dibi. For k, compare ayak → ayağı and renk → rengi.
For the first rule, there are relatively few suffixes to deal with in beginner / intermediate Turkish.
| Ending description | Suffix |
|---|---|
| Verbs: Simple past tense | -di, -dı, -dü, -du → -ti, -tı, -tü, -tu |
| Location (“at”, “on”) | -de, -da → -te, -ta |
| Adverb / Language | -ce, -ca → -çe, -ça |
| Profession (person who does things) | -ci, -cı, -cü, -cu → -çi, -çı, -çü, -çu |
There are some more complex ones as you progress through intermediate level Turkish, like the “predicative”. It’s not that it’s uncommon; it’s just that it’s more complex than simple present and past tenses. But by the time you come to study the predicative, you’ll have the hang of consonant harmony.
Examples of applying consonant harmony are below.
| English | Noun | Last consonant | Suffix | Turkish |
|---|---|---|---|---|
| Florist (Flower seller) | Çiçek (“flower”) | k | ci | Çiçekçi |
| At the park | Park (“park”) | k | da | Parkta |
| My drink | İçecek (“drink”) | k | im | İçeceğim |
| Your foot | Ayak (“foot”) | k | ın | Ayağın |
| In the book | Kitap (“book”) | p | da | Kitapta |
| Next to the tree | Ağaç (“Tree”) | ç | ın yanında | Ağacın yanında |
| Slowly | Yavaş (“Slow”) | ş | ca | Yavaşça |
| Turkish | Türk (“Turk”) | k | ce | Türkçe |
The Nut Vendor: FıSTıKÇı ŞaHaP
The mnemonic FıSTıKÇı ŞaHaP contains the eight voiceless consonants.
It means “Şahap the nut seller”; Şahap is a name. Use it to remember which consonants trigger suffix devoicing, not as a list of eight consonants that all soften.
You can use this if you wish, of course, particularly if you’re taking a test.
But in reality, I find that it makes more sense to develop a natural intuition for words that get modified with consonant harmony.
Consonant Harmony in Day to Day Life
Now you know the rules, so it’s easy to spot Turkish consonant harmony in day to day life and know what’s going on.
The advantage of knowing Turkish consonant harmony is that when you see it, you’ll understand it.
You can still be understood while you’re learning these patterns. But don’t rely on people overlooking the difference: practising common forms such as kitapta, kitabı and çiçekçi will make both speaking and reading easier.
