Most learners meet only three participles — -An, -DIK, and -(y)AcAK — and assume the system ends there. It does not. The aorist suffix -Ir and its negative counterpart -mAz also form participles, but of a special kind: characterizing participles that describe what a thing characteristically does or cannot do. They are far less productive than the main three, but they are everywhere in fixed expressions, signage, brand names, and compounds — akar su ("running water"), çıkmaz sokak ("dead-end street"), tükenmez kalem ("ballpoint pen", literally "inexhaustible pen"). Recognizing them is what separates an intermediate reader from a fluent one.
The characterizing meaning
An aorist participle does not relativize a specific event the way -DIK does. It states a defining property. Akar su is not "water that flowed once" but "water that flows by its nature" — running water, as opposed to durgun su, still water. This is the same generic, timeless meaning the aorist carries as a finite tense (the aorist -Ir), now frozen onto a noun.
Köyde akar su yoktu, herkes kuyudan su çekiyordu.
There was no running water in the village; everyone drew water from the well.
Duvardaki çalar saat tam yedide çaldı.
The alarm clock on the wall went off at exactly seven.
Çalar saat — literally "a clock that rings" — is the standard word for an alarm clock. The participle names a defining function, not an event. Other everyday members of this family: güler yüz ("a smiling face", i.e. a friendly manner), koşar adım ("at a running pace"), yazar kasa ("a cash register").
Bizi güler yüzle karşıladılar, hemen rahatladık.
They welcomed us with a friendly face, and we relaxed at once.
The negative -mAz participle: "the one that doesn't / can't"
The negative aorist -mAz makes a participle meaning "that does not / cannot V" — a thing defined by what it fails to do. This is the source of some of Turkish's most characteristic compounds.
- çıkmaz sokak — "dead-end street", literally "a street that doesn't exit"
- tükenmez kalem (often just tükenmez) — "ballpoint pen", literally "a pen that doesn't run out"
- geçmez akçe — "counterfeit / worthless coin", "money that doesn't pass"
- dayanılmaz — "unbearable", "that cannot be endured"
Yanlış sokağa saptık, sonu çıkmaz sokakmış.
We turned into the wrong street; it turned out to be a dead end.
Çantamda her zaman yedek bir tükenmez bulundururum.
I always keep a spare ballpoint pen in my bag.
Öğleden sonra sıcak dayanılmaz bir hâl aldı.
In the afternoon the heat became unbearable.
The suffix is two-way (-maz / -mez), unlike the four-way -mIş: çık-maz, tüken-mez, yıl-maz, dur-maz. Note that -mAz is the negative aorist's participle form; as a finite verb the same shape means "does not V" (çıkmaz, "it doesn't come out").
Lexicalized words and names
Many -mAz forms have hardened into stand-alone vocabulary or proper names. Yılmaz ("undaunted", "one who does not flinch") is one of the most common Turkish surnames and given names. Tükenmez alone means a ballpoint. Dayanılmaz and inanılmaz function as ordinary adjectives ("unbearable", "incredible").
İnanılmaz bir manzaraydı, fotoğraflar hakkını veremiyor.
It was an incredible view; the photos don't do it justice.
Yılmaz Bey otuz yıldır bu mahallede bakkallık yapıyor.
Mr. Yılmaz has run the grocery in this neighbourhood for thirty years.
The phrase inanılır gibi değil ("it's not to be believed") and the idiom biter tükenmez ("endless", "never-ending") show the same forms living inside larger set expressions — exactly the territory covered in verbal idioms.
Onun şikâyetleri biter tükenmez, sürekli bir şeylerden yakınır.
His complaints are endless; he constantly grumbles about something.
Why this is not a productive relative clause
The crucial difference from -An: you cannot freely build a fresh aorist participle for any verb to relativize a one-off subject. Akar su works because it is a conventional, characterizing label; you would not invent yağar yağmur on the spot to mean "the rain that is falling now" — that calls for yağan yağmur with -An. The aorist participle lives in established expressions and characterizations, while -An does the live, productive work. Treat the aorist participle as a recognition skill first: learn to read it, and add the handful of fixed compounds to your vocabulary.
Bahçeden geçen dere kışın akar, yazın kurur.
The stream passing through the garden flows in winter and dries up in summer.
Here geçen (-An) does the productive relativizing — "the stream that passes through" — while the finite akar states its characteristic behaviour. That division of labour is the whole point.
Common mistakes
1. Not recognizing -mAz / -Ir as participial inside a compound. Read çıkmaz sokak as a unit, not as a stray verb.
❌ 'çıkmaz sokak' içindeki çıkmaz'ı çekimli fiil sanmak
Wrong — here çıkmaz is a participle ('that doesn't exit') modifying sokak, not a finite verb.
✅ çıkmaz sokak
A dead-end street.
2. Using an aorist participle for a live, one-off event. Productive relativizing belongs to -An.
❌ şu an yağar yağmur
Wrong — for rain falling right now use the productive -An: yağan yağmur.
✅ şu an yağan yağmur
The rain falling right now.
3. Giving -mAz four-way harmony. It is two-way only.
❌ tükenmuz kalem
Wrong — -mAz harmonises two ways; after a front vowel it is -mez: tükenmez.
✅ tükenmez kalem
A ballpoint pen.
4. Welding the compound into one word or capitalizing it. These stay two lowercase words.
❌ akarsu içme suyu için kullanılır (birleşik yazım)
Wrong as a participial compound — write the running-water compound as two words: akar su.
✅ akar su
Running water.
5. Treating a lexicalized -mAz as a fresh verb form. Yılmaz, tükenmez, inanılmaz are vocabulary in their own right.
❌ inanılmaz'ı her zaman 'inanılmaz' fiil çekimi olarak görmek
Wrong — inanılmaz here is the fixed adjective 'incredible', not a live verb form.
✅ inanılmaz bir manzara
An incredible view.
Key takeaways
- The aorist -Ir and negative -mAz form characterizing participles — they name what a thing typically does or cannot do, not a specific event.
- They are not productive the way -An is; they live in fixed compounds, idioms, signage, and names (akar su, çıkmaz sokak, tükenmez kalem, güler yüz, Yılmaz).
- -mAz is two-way (-maz / -mez); -Ir follows the regular aorist vowel rules.
- TDK spelling keeps these compounds as two separate lowercase words.
- Your main goal is recognition: read them correctly, learn the common ones as vocabulary, and leave live relativizing to -An, -DIK, and -(y)AcAK. Many appear in verbal idioms.
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