The Object/Factive Participle -DIK

If -An handles relative clauses where the head noun is the subject, -DIK handles everything else: clauses where the head noun is the object or some other non-subject role. Gördüğüm adam is "the man (whom) I saw"; oturduğumuz ev is "the house we live in". The crucial extra machinery is that -DIK always carries a possessive suffix agreeing with the embedded subject — and that suffix is exactly where English speakers stumble. The same form doubles as the past/non-future factive nominalizer in complement clauses, which is covered alongside this in nominalized complements.

The core idea: -DIK is "the X-ing of someone"

The deep logic of -DIK is possessive. Gör-düğ-üm literally builds something like "my-seeing", and then "my-seeing adam" resolves to "the man of my seeing" → "the man I saw". The possessive ending is not decoration — it tells you who did the action inside the clause. This is why -DIK can never appear bare in a relative clause: there must always be a possessor.

The spelling trap: k softens to ğ

The suffix is underlyingly -DIK, but the final k turns into ğ the instant a vowel-initial possessive ending follows. This is the same lenition you see in köpek → köpeğim. So you almost never actually write a k in the singular and 1st/2nd-plural forms:

• gör-dük + üm → gördüğüm (not gördüküm)
• git-tik + imiz → gittiğimiz (not gittikimiz)
• yaz-dık + ım → yazdığım

The k survives only in the 3rd-person plural -leri/-ları, because there the buffered form keeps the consonant: gördükleri, yaptıkları. Learn the rule as: vowel ending → ğ; the -leri ending → k stays.

The genitive-subject frame

Because the possessive ending marks the embedded subject, you often also mark that subject with the genitive case — exactly as in a possessive phrase (benim evim, "my house"). The relative clause mirrors that structure: benim gördüğüm ("the one I saw"), Ali'nin aldığı ("the one Ali bought"). The genitive subject can be dropped when it is a pronoun and obvious from the agreement, but it is obligatory for full noun phrases.

Notice bahsettiğin: bahset- takes the oblique with -den (bahsetmek, "to talk about"), and the head noun kitap is that oblique argument — a non-subject — so -DIK is correct even though there is no direct object relationship in English terms. -DIK covers every non-subject role, not just direct objects.

Obliques: places, instruments, and more

When the head noun is a location, an instrument, or some other oblique, -DIK still does the job. The clause simply leaves a "gap" for the oblique, and the head noun fills it.

In oturduğumuz ev, the house is where we sit/live — a locative oblique — and Turkish does not need any preposition or -de on the gap; the participle absorbs the relationship. This economy is one reason Turkish relative clauses feel so compact compared with English.

-DIK as a factive nominalizer

The same form nominalizes a whole fact in complement clauses, with past or non-future reference. Here -DIK + possessive means "(the fact) that someone did X", and the clause behaves like a noun, taking case endings.

In sevdiğini, sevdiği is "(the fact) that he loves", -ni is the accusative (because bilmek takes a direct object), and onun is the genitive subject. The future-time counterpart of this construction uses -(y)AcAK instead; the two share identical agreement machinery and differ only in time reference.

Common mistakes

1. Dropping the possessive agreement. A bare -DIK is ungrammatical in a relative clause — there must be a possessor.

2. Using -An for an object relative. If the head noun is acted upon, -DIK is required, not -An.

3. Leaving the k unchanged before a vowel. The k must soften to ğ.

4. Forgetting to put the embedded subject in the genitive. Full noun-phrase subjects must be genitive.

5. Using a finite tense inside the relative clause. You cannot say gördüm adam; relativization is morphological, on the participle.

Key takeaways

• -DIK relativizes non-subjects — objects and obliques — where -An cannot.
• It always carries a possessive suffix agreeing with the embedded subject; that suffix is the heart of the construction (gördüğüm = "my-seeing").
• Spelling: k → ğ before the vowel of the possessive (gördüğüm, gittiğimiz), but k stays before 3rd-plural -leri (gördükleri). The D hardens to t after voiceless consonants.
• Full noun-phrase subjects take the genitive (Ali'nin aldığı).
• The same form is the past/non-future factive nominalizer in complements; its future partner is -(y)AcAK. For when to pick -An or -DIK, see choosing -An vs -DIK.