Consonant mutation (k, t, p, ç to ğ, d, b, c)

In Turkish, pronunciation is designed to flow smoothly. When a word ends in a hard consonant and you add a suffix starting with a vowel (like the dative -a or -e), that hard consonant usually "softens".

This is known as consonant mutation. The hard consonants k, t, p, and ç change to ğ, d, b, and c. A helpful way to remember these four letters is the word "ketçap" (ketchup).

  • k becomes ğ
  • t becomes d
  • p becomes b
  • ç becomes c

The "k" to "ğ" Mutation

When adding the dative suffix to words ending in k, the k turns into a soft ğ. For example, sözlük (dictionary) becomes sözlüğe, and durak (bus stop) becomes durağa.

I am looking at the dictionary now.
Şimdi sözlüğe bakıyorum.
The bus is coming to the bus stop.
Otobüs durağa geliyor.

The "t" to "d" Mutation

Words ending in t change to d before a vowel. Watch how kağıt (paper) becomes kağıda, and yurt (dormitory) becomes yurda.

I am writing an answer on the paper.
Kağıda bir cevap yazıyorum.
We are returning to the dormitory tomorrow.
Yarın yurda dönüyoruz.

The "ç" and "p" Mutations

Similarly, ç softens to c, and p softens to b. See how ilaç (medicine) takes the dative suffix to become ilaca, and hesap (account) becomes hesaba.

The sick man is starting the medicine today.
Hasta adam ilaca bugün başlıyor.
I am sending money to the account today.
Bugün hesaba para gönderiyorum.

More Verbs That Take the Dative Case

In the previous lesson, you saw that physical destinations and verbs like bakmak (to look) take the dative case. Turkish also uses the dative case for certain abstract verbs.

to believe
inanmak
to trust
güvenmek

In English, you believe or trust someone directly. In Turkish, you believe to someone and trust to someone. Let's see these in action, applying the consonant mutation rules to the words çocuk (child) and köpek (dog).

We believe the child.
Biz çocuğa inanıyoruz.
I trust the dog.
Köpeğe güveniyorum.