Noun Clauses in Turkish

In Brief

Turkish often expresses English clauses with that or someone doing something by turning the embedded verb into a noun-like form. A factual clause usually uses -DIK + a possessive ending (geldiğini, “that you came/come”), while an intended or requested action often uses -mA + a possessive ending (gitmemi, “my going / that I go”). The whole clause can then take a case ending according to its role in the larger sentence.

Overview

A noun clause is a group of words built around a verb but used where a noun could stand: as the thing someone knows, wants, hears, or is pleased about. In “I know that you came,” the bold part is what is known. English normally keeps a finite verb such as “came” and may introduce the clause with “that.” Turkish commonly uses a nominalized verb (a verb made noun-like) instead.

This is a central B1 pattern because it allows you to combine ideas without relying on separate short sentences. Once you can recognize the layers in Senin geldiğini biliyorum, you can understand the structure of many everyday statements about knowledge, perception, wishes, requests, and reactions.

The main challenge is that Turkish packs several pieces of information into one word. In geldiğini, the verb stem, nominalizer, possessive ending, and accusative case ending all appear together. Work from the inside out rather than trying to translate each suffix as a separate English word.

How It Works

The basic sentence pattern

A typical Turkish noun clause has this shape:

embedded subject + nominalized verb + main verb

Senin geldiğini biliyorum.
“I know that you came.”

Here, senin is the subject of “come,” not of “know.” It is in the genitive case (the form often corresponding to “of” or possession). The ending -in in geldiğin agrees with that embedded subject:

• sen-in — your / of you
• gel-diğ-in — your coming; that you come/came
• gel-diğ-in-i — your coming as the definite object of biliyorum

English uses a personal verb in “you came.” Turkish marks the same relationship with a genitive subject and a possessive ending on the nominalized verb.

Factual clauses with -DIK

-DIK is dictionary shorthand for a family of forms. Its vowel follows four-way vowel harmony, and initial d becomes t after certain voiceless consonants.

Last vowel / sound environment	Nominalizer	Example before a possessive ending
a, ı	-dık / -tık	yaptığım — that I do/did
e, i	-dik / -tik	bildiğin — that you know/knew
o, u	-duk / -tuk	olduğunu — that it is/was
ö, ü	-dük / -tük	gördüğümüz — that we see/saw

When k comes before a vowel-initial possessive ending, it normally softens to ğ: gel-dik-im → geldiğim. This is why learners usually meet -dığ-, -diğ-, -duğ-, -düğ- inside complete words.

The possessive ending identifies the doer of the embedded action:

Embedded subject	Form with gelmek	Approximate meaning
ben	geldiğim	that I come/came
sen	geldiğin	that you come/came
o	geldiği	that he/she/it comes/came
biz	geldiğimiz	that we come/came
siz	geldiğiniz	that you come/came
onlar	geldikleri	that they come/came

The nominalizer -DIK does not by itself equal English past tense. Its time is often understood from context or from the main verb:

• Burada çalıştığını biliyorum. — I know that you work here.
• Dün burada çalıştığını biliyorum. — I know that you worked here yesterday.

Use -DIK especially for facts, beliefs, discoveries, memories, perception, and reactions to situations: bilmek (know), düşünmek (think), hatırlamak (remember), fark etmek (notice), and duymak (hear).

Action clauses with -mA

The nominalizer -mA appears as -ma or -me by two-way vowel harmony. It presents an action as an event, plan, request, desired act, or fact of doing. Add a possessive ending to show who performs it:

Embedded subject	Form with gitmek	Approximate meaning
ben	gitmem	my going / that I go
sen	gitmen	your going / that you go
o	gitmesi	his/her going / that he/she go
biz	gitmemiz	our going / that we go
siz	gitmeniz	your going / that you go
onlar	gitmeleri	their going / that they go

This pattern is common after verbs and expressions of wanting, requesting, allowing, preventing, and evaluating an action:

• Gitmeni istiyorum. — I want you to go.
• Erken gelmemizi rica etti. — She asked us to come early.
• Burada sigara içmeniz yasak. — Your smoking here is prohibited.

Do not confuse nominalizing -mA with negative -ma/-me. They can occur next to each other:

• gel-me-m — my coming
• gel-me-me-m — my not coming
• Gelmemi istiyor. — He wants me to come.
• Gelmememi istiyor. — He does not want me to come.

The surrounding endings and sentence meaning reveal which -ma/-me is negative and which is the nominalizer.

Choosing between -DIK, -mA, and -mAk

These forms overlap, but they do not simply replace one another.

Form	Typical focus	Example
-DIK + possessive	a proposition treated as a fact, belief, or perception	Onun geldiğini duydum. — I heard that she came.
-mA + possessive	a specific person’s intended, requested, permitted, or evaluated action	Onun gelmesini istedim. — I wanted her to come.
-mAk	an action in general, or an action whose performer is understood and need not be separately marked	Yüzmek sağlıklıdır. — Swimming is healthy.

When the subject of istemek is also the person who will act, Turkish normally uses -mAk: Gitmek istiyorum (“I want to go”). Use -mA + possessive when the embedded performer is made explicit or differs from the person who wants: Gitmeni istiyorum (“I want you to go”).

Adding case endings

Because the nominalized clause behaves like a noun phrase, it receives the case required by the main verb or expression. Case means an ending that shows a phrase’s job, such as definite object, destination, location, or source.

Role	Case	Example	Meaning
definite object	accusative -(y)I	geldiğini biliyorum	I know that you came.
direction / target	dative -(y)A	gelmene sevindim	I was glad that you came.
location / respect	locative -DA	gelmende sorun yok	There is no problem with your coming.
source / cause	ablative -DAn	gelmenden memnunum	I am pleased that you came/are coming.
subject or predicate complement	no case ending	gelmen önemli	It is important that you come.

The final -i in geldiğini is not part of -DIK or the second-person possessive ending. It is accusative: gel-diğ-in-i. Likewise, git-me-m-i contains first-person possessive -m plus accusative -i.

Case choice belongs to the larger construction. Learn a main verb together with the case it requires: bir şeyi bilmek (know something, accusative), bir şeye sevinmek (be glad about something, dative), bir şeyden korkmak (fear something, ablative).

Marking the embedded subject

An explicit subject in these clauses is generally genitive:

• Ali’nin geldiğini biliyorum. — I know that Ali came.
• Çocukların erken yatmasını istiyorum. — I want the children to go to bed early.

If context already makes the subject clear, Turkish often omits it: Geldiğini biliyorum. Depending on context, this can mean “I know that you came” or “I know that he/she came.” The possessive ending narrows the possibilities, but third-person forms do not show gender because Turkish has no grammatical distinction between “he” and “she.”

Word order

The noun clause normally comes before the main verb, following Turkish head-final word order:

[Ayşe’nin yarın geleceğini] biliyoruz.
“We know [that Ayşe will come tomorrow].”

Time, place, objects, and adverbs belonging to the embedded verb stay inside its clause: Ayşe’nin yarın saat üçte ofise geleceğini biliyoruz. Turkish can move constituents for emphasis, especially in speech, but this neutral order is the safest model.

Examples in Context

Turkish	English	Note
Geldiğini biliyorum.	I know that you came.	-DIK clause; embedded subject understood
Mert’in evde olduğunu düşünüyorum.	I think that Mert is at home.	olduğunu carries “that … is”
Anahtarları nerede bıraktığımı hatırlamıyorum.	I do not remember where I left the keys.	Question word remains inside the clause
Onların bizi beklediğini fark ettik.	We noticed that they were waiting for us.	Explicit genitive subject
Bu kitabı daha önce okuduğumu söyledim.	I said that I had read this book before.	Time comes from context
Gitmemi istiyor.	He wants me to go.	-mA + first-person possessive + accusative
Doktor daha fazla dinlenmeni önerdi.	The doctor suggested that you rest more.	Specific recommended action
Toplantıya zamanında gelmeniz önemli.	It is important that you arrive at the meeting on time.	Clause is the subject; no case suffix
Bize yardım etmesine sevindim.	I was glad that he/she helped us.	Dative required by sevinmek
Geç kalmamızdan endişeleniyor.	She is worried that we may be late.	Ablative required by the expression
Burada fotoğraf çekmenize izin vermiyorlar.	They do not allow you to take photos here.	Dative marks the action being permitted
Ayşe’nin gelmemesini tercih ederim.	I would prefer Ayşe not to come.	Negative action noun: gel-me-me-si-ni
Okuduğum şey beni şaşırttı.	What I read surprised me.	-DIK form modifies şey (“thing”)
Sana verdiğim sözü unutmadım.	I have not forgotten the promise I gave you.	Related participial use before a noun

Common Mistakes

Using a finite Turkish verb after an English-style “that”

• Wrong: Biliyorum sen geldin.
• Right: Senin geldiğini biliyorum.
• Why: In neutral standard Turkish, the embedded statement is normally nominalized and placed before biliyorum. English clause order does not transfer directly.

Forgetting the possessive ending

• Wrong: Senin gelmek istiyorum. (intended: “I want you to come”)
• Right: Senin gelmeni istiyorum.
• Why: The embedded subject senin must be matched by the second-person possessive ending in gelmen; the clause then takes accusative -i.

Treating -DIK as automatically past

• Wrong assumption: çalıştığını always means “that you worked.”
• Right: Burada çalıştığını biliyorum can mean “I know that you work here.”
• Why: Adverbs, context, and the main verb help establish time. -DIK mainly nominalizes a factual proposition.

Leaving off the case required by the main verb

• Wrong: Geldiğin biliyorum.
• Right: Geldiğini biliyorum.
• Why: What is known is a definite object, so the complete noun clause takes accusative -i.

Using -mA when -mAk is natural for the same subject

• Awkward: Ben gitmemi istiyorum.
• Natural: Gitmek istiyorum.
• Why: When “I” both want and go, the infinitive is the normal choice. Gitmemi istiyor is natural because someone else wants me to go.

Missing the extra negative syllable

• Wrong: Gelmemi istiyor for “He does not want me to come.”
• Right: Gelmememi istiyor.
• Why: gel-me-m-i means “my coming” as object. To negate the embedded action, add negative -me before nominalizing -me: gel-me-me-m-i.

Usage Notes

English speakers often search for a Turkish equivalent of “that.” In these constructions there usually is no separate word corresponding to English “that”; the relationship is carried by suffixes. The conjunction ki can introduce finite clauses in other patterns, but it is not a universal replacement for nominalization. In ordinary sentences with bilmek, istemek, and similar verbs, learning the suffix-based structure gives you the more productive model.

Pronouns and named embedded subjects are omitted when recoverable. Geldiğini duydum sounds complete if both speakers know whose arrival is under discussion. Add senin, onun, or a name when contrast or clarity matters.

Spoken Turkish may place a heavy clause after the main verb for emphasis or ease of processing, but the pre-verbal order remains the best neutral pattern for learners. Formal writing often contains longer nominalized clauses, so identify the final nominalized verb first and then trace which words belong to it.

The difference between -DIK and -mA is partly semantic, not merely mechanical. Compare Ali’nin geldiğini biliyorum (“I know that Ali came/is here”) with Ali’nin gelmesini istiyorum (“I want Ali to come”). The first presents information as known; the second presents an action as wanted.

Beyond the Basics / Advanced Use

Future-oriented factual clauses with -(y)AcAK

For an event explicitly viewed as future relative to the context, Turkish often nominalizes -(y)AcAK in a pattern parallel to -DIK:

• Yarın geleceğini biliyorum. — I know that you will come tomorrow.
• Fiyatların artacağını düşünüyorlar. — They think prices will rise.

It takes possessive and case endings too: gel-ecek-in-i → geleceğini. In many contexts, time adverbs and meaning already do much of the work, but recognizing -(y)AcAK is essential for a complete understanding of noun clauses.

Embedded questions

Question words can remain inside a nominalized clause:

• Ne yaptığını bilmiyorum. — I do not know what you did/are doing.
• Neden gelmediğini sordu. — She asked why you did not come.
• Toplantının ne zaman başlayacağını biliyor musun? — Do you know when the meeting will start?

These are indirect questions. Do not add the question particle mi merely because English uses an embedded “whether” or because the larger meaning involves uncertainty; the exact Turkish pattern depends on the construction.

-DIK before a noun

The same -DIK family also forms participial modifiers—verb-based descriptions placed before nouns:

• okuduğum kitap — the book that I read
• tanıdığın kişi — the person whom you know

In Okuduğum şey beni şaşırttı, okuduğum directly modifies şey. This is closely related to noun-clause formation but syntactically functions like an adjective: it identifies which thing. A following noun means the case ending, if needed, usually attaches to that noun: okuduğum kitabı (“the book that I read,” accusative).

Nominalized clauses inside larger noun phrases

Advanced Turkish can place nominalized clauses in possessive and postpositional structures:

• Onun gelme ihtimali düşük. — The possibility of his coming is low.
• Geç kaldığım için özür dilerim. — I apologize because I was late.

At this stage, do not memorize every combination as a separate formula. First identify the embedded verb and its subject, then determine the role of the complete phrase in the larger sentence.

Practice Tips

1. Build words in layers. Start with gel-, add -DIK, then the performer, then case: gel-diğ-in-i. Say what each layer does rather than memorizing the finished word as an indivisible block.
2. Make contrast pairs. Practice Geldiğini biliyorum / Gelmeni istiyorum and Gitmek istiyorum / Gitmeni istiyorum. This trains the meaning differences among -DIK, -mA, and -mAk.
3. Collect verbs with their case patterns. Write down complete frames such as -DIK + accusative + bilmek, -mA + dative + sevinmek, and -mA + ablative + endişelenmek. Replace the subject and action to create new sentences.

Related Concepts

• Prerequisite: Basic Participles — introduces verb forms that modify nouns and prepares you for okuduğum şey.
• Next step: Indirect Speech — uses clause structures to report statements, questions, and requests.
• Advanced: Advanced Nominalization — develops denser and more varied noun-like verb constructions.