The Six Cases: Overview | Turkish Grammar

Turkish marks the role a noun plays in a sentence by attaching a case suffix to the end of it — not by using a preposition or by relying on word order, as English does. There are six cases, and almost everything English handles with little words like to, in, from, of, at is handled in Turkish by one of these endings. This page gives you the whole map at a glance; each case then has its own page with the detail.

The six cases at a glance

Here is the system on a single noun, ev "house," so you can see the whole paradigm in one sweep:

Case	Suffix (notation)	ev "house"	Rough English	Job
Nominative	— (none)	ev	a/the house	subject; indefinite object
Accusative	-(y)I	evi	the house (object)	specific/definite object
Dative	-(y)A	eve	to/into the house	destination, recipient
Locative	-DA	evde	in/at the house	location
Ablative	-DAn	evden	from the house	source, origin
Genitive	-(n)In	evin	of the house / the house's	possessor

Read that column of forms aloud — ev, evi, eve, evde, evden, evin — and you have the skeleton of Turkish noun grammar. Every noun in the language inflects on this pattern; the only thing that changes from noun to noun is which vowels and consonants the suffixes harmonise to.

Ev güzel.

The house is nice. (nominative — the subject, no suffix)

Evi sattılar.

They sold the house. (accusative -i — a specific object)

Eve geliyorum.

I'm coming home / to the house. (dative -e — destination)

Evde kimse yok.

There's no one at home. (locative -de — location)

Evden yeni çıktım.

I've just left the house. (ablative -den — source)

Evin kapısı kırmızı.

The house's door is red. (genitive -in — possessor)

Cases replace prepositions

The single biggest mental shift for an English speaker is this: stop looking for a separate word and start attaching a suffix. Where English puts a preposition in front of the noun, Turkish glues an ending onto the back of it.

to school → okula (okul + dative -a)
in school → okulda (okul + locative -da)
from school → okuldan (okul + ablative -dan)
the school's / of the school → okulun (okul + genitive -un)

Okula yürüyerek gidiyorum.

I walk to school. (one word okula carries 'to school')

Anahtarı çantamdan aldım.

I took the key from my bag. (çanta-m-dan — bag-my-from)

Kediyi komşuya verdik.

We gave the cat to the neighbour. (kedi-yi object, komşu-ya recipient)

Word order helps too — Turkish is broadly subject-object-verb — but the case ending is what actually tells you the role, which is why Turkish word order can flex for emphasis without confusion.

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Whenever you would reach for an English preposition (to, in, from, of, at), ask "which case is that?" and put the ending on the noun instead. The preposition you were about to write is already inside the Turkish word.

The fixed slot: where the case ending goes

Case endings live in a fixed position on the noun: they come last, after the plural and after any possessive ending. The order is always:

stem – PLURAL – POSSESSIVE – CASE

So a stacked form like evlerimde parses cleanly as:

ev	-ler	-im	-de
house	PLURAL	my	in (LOC)

— "in my houses." Learning to read suffixes in this fixed order is genuinely half the battle. When you meet a long Turkish word, peel it from the right: the last chunk is the case, the chunk before it is usually the possessive, and the plural sits up against the stem.

Arkadaşlarımdan haber aldım.

I heard from my friends. (arkadaş-lar-ım-dan — friend-PL-my-from)

Öğretmenimize teşekkür ettik.

We thanked our teacher. (öğretmen-imiz-e — teacher-our-to)

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Peel Turkish nouns from the right: CASE is the outermost ending, then POSSESSIVE, then PLURAL hugging the stem. Get this slot order automatic and long words stop being scary.

Two kinds of variation in every suffix

Each case suffix shifts its shape in two predictable ways, both already familiar from the sound system:

Vowel harmony. The suffix vowel changes to match the stem. The dative, accusative, and genitive vowels harmonise; even the locative and ablative have an e/a alternation. That is why the accusative of ev is evi but of okul is okulu.
Consonant mutation. Suffixes written with a capital D (locative -DA, ablative -DAn) start with t after a voiceless consonant: kitapta "in the book," uçakta "on the plane," not kitapda. And the genitive/accusative buffer y or n appears only after vowels and pronouns.

You do not need the full detail here — each case page works through its own harmony and mutation. The point of the overview is to expect both kinds of variation and not be thrown when -de shows up as -te.

Kitapta ilginç bir bölüm var.

There's an interesting chapter in the book. (kitap → -ta, not -da, after voiceless p)

Uçaktan iner inmez seni ararım.

I'll call you as soon as I get off the plane. (uçak → -tan after voiceless k)

Where to go next

Each case earns its own page because each has subtleties — especially the accusative, which is the heart of Turkish definiteness:

Accusative -(y)I — the specific/definite object; Turkish's stand-in for "the."
Dative -(y)A — to, into, toward; recipients.
Locative -DA — in, at, on; location.
Ablative -DAn — from, out of; sources and comparisons.
Genitive -(n)In — of, 's; the possessor half of the possessive construction.

Common mistakes

❌ Ben gidiyorum to okul.

Incorrect — Turkish has no preposition 'to'; the dative ending carries it: okula.

✅ Okula gidiyorum.

I'm going to school.

❌ Evde-im-ler-de oturuyoruz.

Incorrect slot order — case must come last: ev-ler-im-de, evlerimde.

✅ Evlerimde misafir var.

There are guests in my houses.

❌ Kitapda ne yazıyor?

Incorrect — after voiceless p the locative is -ta: kitapta.

✅ Kitapta ne yazıyor?

What does it say in the book?

❌ Okuldan okula okulda — hepsi aynı son ek.

Misconception — these are three different cases (ablative, dative, locative), not one ending; the suffix changes the meaning.

✅ Okula gidiyorum, okulda kalıyorum, okuldan dönüyorum.

I go to school, I stay at school, I come back from school.

The defining beginner error is hunting for a preposition — leaving a gap where English would put to or in, or trying to keep the English word. There is no gap to fill: the meaning is in the ending. The second is scrambling the suffix order; case is always the last thing on the noun.

Key takeaways

Turkish has six cases: nominative (no ending), accusative -(y)I, dative -(y)A, locative -DA, ablative -DAn, genitive -(n)In.
On ev: ev, evi, eve, evde, evden, evin — memorise this paradigm as your template.
Case suffixes replace English prepositions and word-order roles — attach an ending instead of reaching for to / in / from / of.
Case is the outermost ending, in the fixed slot stem – PLURAL – POSSESSIVE – CASE: ev-ler-im-de.
Every case suffix varies by vowel harmony and, for the D-suffixes, by consonant mutation (-DA → -ta after voiceless stems).

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