In English, when you drop the noun you usually need a propping word: the red one, the rich ones, the *one I like. Turkish has no such prop. Because adjectives and nouns take the *exact same set of suffixes — plural, case, possessive — an adjective can simply put on a noun's clothing and head the phrase by itself. Kırmızı "red" becomes a noun the moment it takes a case ending: Kırmızıyı ver "Give me the red one." This page is about that conversion: how a modifier becomes the thing it was modifying.
Adjectives and nouns share one suffix system
This is the structural fact that makes everything else possible. Turkish does not have separate "adjective endings" and "noun endings." There is one suffix system — plural -lAr, the cases (accusative -(y)I, dative -(y)A, locative -DA, ablative -DAn, genitive -(n)In), and the possessives — and any word slotted into a noun position can take them. An adjective sitting in front of a noun (kırmızı elma "red apple") is just modifying; the same adjective with a case ending (kırmızıyı "the red one, ACC.") is the noun.
So there is nothing to "convert." You take the adjective, attach the nominal suffix you would have put on the noun, and the adjective now denotes the noun. English needs one; Turkish needs only the suffix.
Hangi elmayı istiyorsun? Kırmızıyı ver.
Which apple do you want? Give me the red one.
İki çanta var; küçüğü senin, büyüğü benim.
There are two bags; the small one is yours, the big one is mine.
Bu gömlekler güzel ama maviyi tercih ederim.
These shirts are nice, but I prefer the blue one.
The partitive -(s)I: "the X one"
When you single out a member of a set — "the pretty one (of them)," "the small one (of these)" — the adjective takes the third-person possessive -(s)I (the -i / -ı / -u / -ü ending, with a buffer s after a vowel). This is the same possessive you use for "its," and here it means roughly "the X one of them": güzel "pretty" → güzeli "the pretty one," küçük "small" → küçüğü "the small one" (with the regular k → ğ softening).
This partitive -(s)I is especially natural after a superlative with en: en güzel "prettiest" → en güzeli "the prettiest one (of them)."
| Adjective | "the X one" (partitive -(s)I) | Note |
|---|---|---|
| güzel (pretty) | güzeli | after consonant |
| küçük (small) | küçüğü | k → ğ softening |
| büyük (big) | büyüğü | k → ğ softening |
| mavi (blue) | mavisi | buffer s after vowel |
| en güzel (prettiest) | en güzeli | superlative + partitive |
Bütün resimler güzeldi ama en güzeli seninkiydi.
All the pictures were lovely, but the prettiest one was yours.
Ayakkabıların ikisi de yeni; ben mavisini giydim.
Both pairs of your shoes are new; I wore the blue one.
Çocuklardan küçüğü hâlâ uyuyor.
The younger one of the children is still asleep.
Plural adjectives as group nouns: "the rich, the elderly"
Add the plural -lAr to an adjective and it names a class of people: zengin "rich" → zenginler "the rich, rich people," fakir "poor" → fakirler "the poor," yaşlı "old, elderly" → yaşlılar "the elderly." English does this with the + adjective (the rich, the poor, the elderly); Turkish does it with the plural suffix and no article — there is no definite article to add.
Once it is a noun, it keeps taking noun suffixes: fakirleri "the poor (ACC.)," zenginlerin "of the rich."
Bu vakıf yaşlılara yardım ediyor.
This foundation helps the elderly.
Yeni vergi zenginleri pek etkilemedi.
The new tax didn't affect the rich much.
Devlet fakirleri korumalı.
The state should protect the poor.
The same suffixes the noun would have taken
It helps to see why this works so cleanly: the adjective takes exactly the suffix the omitted noun would have carried, with no adjustment. If the full phrase is kırmızı elma-yı "the red apple (ACC.)," dropping elma leaves kırmızı-yı — the accusative simply slides onto the adjective. If it is küçük çocuğ-un "of the small child," dropping çocuk gives küçüğ-ün "of the small one." Nothing changes except which word the suffix lands on. This is why the construction feels effortless to native speakers: they are not making the adjective "into a noun," they are just leaving out a redundant noun and letting its suffix ride along on the modifier.
A practical consequence is that all the usual sound rules still apply: the buffer y before vowel-initial endings (mavi-y-i → maviyi), the k → ğ softening (küçük → küçüğü, büyük → büyüğü), and standard vowel harmony throughout. You are not learning new endings — you are applying the noun endings you already know to a new host.
Pahalı olanı değil, ucuzunu aldım.
I bought the cheap one, not the expensive one.
Şu büyüğün fiyatı ne kadar?
How much is the price of that big one?
Frozen adverbial uses: küçükten
Some adjective-plus-case combinations have settled into fixed adverbial expressions. The most common is küçükten (literally "from small"), meaning "from a young age, since childhood" — the adjective küçük "small" in the ablative, standing in for "from [when I was] little." You will also meet yeniden "anew, again" (from yeni "new") and boşuna "in vain, for nothing" (from boş "empty"). Treat these as set vocabulary; their meaning is idiomatic, not literal.
Küçükten beri piyano çalıyorum.
I've been playing the piano since I was little.
Yanlış oldu, baştan yeniden yazdım.
It came out wrong, so I wrote it again from scratch.
How this differs from English
The English instinct is to supply a noun-prop: one (singular) or ones (plural). "I'll take the red one," "the cheap ones are fine." That word has no Turkish equivalent in these constructions — and inserting one (some learners reach for bir "one/a") is wrong, because bir is the numeral/article "one, a," not a propping pronoun. In Turkish the adjective simply carries the case or possessive itself. Likewise, English needs the in "the rich"; Turkish has no definite article, so the plural suffix does all the work. The mental shift is: stop looking for a noun to lean the adjective on — let the suffix turn the adjective into the noun.
Common mistakes
❌ Kırmızı bir ver.
Incorrect — bir is 'a/one', not a propping 'one'. Put the accusative on the adjective: kırmızıyı.
✅ Kırmızıyı ver.
Give me the red one.
❌ En güzel seninkiydi.
Slightly off — to mean 'the prettiest one' as a noun, add the partitive -i: en güzeli.
✅ En güzeli seninkiydi.
The prettiest one was yours.
❌ Devlet fakir korumalı.
Incorrect — 'the poor' as a group is plural: fakirleri.
✅ Devlet fakirleri korumalı.
The state should protect the poor.
❌ Küçük çanta senin, büyük benim ver.
Incorrect — to say 'the big one', the adjective needs a noun ending: büyüğü.
✅ Küçük çanta senin, büyüğünü ver.
The small bag is yours, give me the big one.
❌ Mavi biri tercih ederim.
Incorrect — biri means 'someone', not a propping 'one'; the accusative on the adjective gives 'the blue one': maviyi.
✅ Maviyi tercih ederim.
I prefer the blue one.
Every error here comes from importing the English prop one or the article the. Drop them, and let the suffix on the adjective carry the meaning.
Key takeaways
- Adjectives and nouns share one suffix system, so any adjective can head a noun phrase by taking case, possessive, or plural.
- The accusative makes "the X one": kırmızı → kırmızıyı "the red one (ACC.)"; büyük → büyüğü(nü) "the big one."
- The partitive -(s)I ("the X one of them") pairs naturally with the superlative: en güzel → en güzeli "the prettiest one."
- Plural -lAr turns an adjective into a class noun: zenginler "the rich," fakirleri "the poor (ACC.)," yaşlılar "the elderly."
- Some adjective-plus-case forms are frozen adverbs: küçükten "from a young age."
- There is no propping "one(s)" and no definite article to translate — the suffix does it all. See adjective overview and the superlative with en for related patterns.
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Start learning Turkish→Related Topics
- Adjectives: No AgreementA1 — Turkish attributive adjectives go before the noun and never agree — in number, gender, or case. All the inflection lives on the noun, so güzel is identical in güzel ev, güzel evler, and güzel evde.
- Forming Abstract Nouns with -lIkB1 — One workhorse suffix builds abstract nouns ('-ness', '-hood', '-ship') and concrete 'thing-for' nouns alike — güzellik, çocukluk, gözlük, tuzluk.
- Superlatives with enA1 — The superlative puts the invariant word en 'most' before the adjective — en büyük 'biggest' — and 'the most X of the Ys' uses an izafet partitive: öğrencilerin en çalışkanı.
- How Turkish Builds WordsB1 — Turkish grows long words by stacking meaning-bearing derivational suffixes onto a small set of roots — göz → gözlük → gözlükçü → gözlükçülük — so learning the suffixes turns vocabulary into a system you can decode and even coin yourself.