Negating the Copula with değil | Turkish Grammar

To say "X is [a noun/adjective]" Turkish glues a copular person ending straight onto the predicate: öğrenciyim "I am a student." To say the opposite — "X is not [a noun/adjective]" — you might expect the negative suffix -mA- that turns verbs into their negatives. That instinct is wrong, and unlearning it is the whole point of this page. Nominal and adjectival predicates are negated with a separate word, değil "not," and the person ending hops onto değil: öğrenci değilim "I am not a student."

The core rule: nouns and adjectives never take -mA-

The verbal negative suffix -mA- lives inside a verb: geliyorum "I am coming" → gelmiyorum "I am not coming." But a noun or adjective is not a verb, so it has nothing for -mA- to attach to. There is no such word as öğrencimem or hastamam. Instead Turkish reaches for the dedicated negator değil, an independent word that means, roughly, "(it) is not."

The structure is Subject + Predicate + değil + person-ending. The predicate itself stays completely bare — no suffix, no change — and değil does all the negating work.

Ben öğretmen değilim, doktorum.

I'm not a teacher, I'm a doctor.

Bu doğru değil, hiç öyle bir şey söylemedim.

That's not true, I never said anything like that.

Çantam burada değil, herhâlde arabada kaldı.

My bag isn't here, it probably stayed in the car.

In each sentence the predicate (öğretmen, doğru, burada) is untouched, and değil sits right after it, optionally carrying a person ending. This is the mirror image of the positive copula: where the positive glues the person ending onto the predicate, the negative inserts değil to hold it.

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The negative of a "be" sentence is never a suffix on the noun or adjective — it is the separate word değil. If you ever catch yourself attaching -ma/-me to a noun or adjective, stop: you want değil.

değil takes the same person endings as the copula

Here is the engine of the page. değil is invariant — it never changes shape — but it hosts exactly the same copular person endings you already know from the positive. Because değil ends in a consonant, the first-person endings attach directly with no buffer.

Person	Form	Meaning
ben (I)	değilim	I am not
sen (you, sg.)	değilsin	you are not
o (he/she/it)	değil	he/she/it is not
biz (we)	değiliz	we are not
siz (you, pl./formal)	değilsiniz	you are not
onlar (they)	değil(ler)	they are not

Notice that the person endings on değil are identical to those on a positive predicate — only the host changed. And because değil always ends in -il, the harmonizing vowel of the ending is always front and unrounded: it is always değilim, değiliz, never değilum or değiluz. This is one of the few places in Turkish where the harmony is effectively frozen, and it makes değil wonderfully easy to memorize.

Hasta değilim, sadece biraz yorgunum.

I'm not sick, I'm just a little tired.

Bu kadar acelemiz yok, geç değiliz.

We're not in such a hurry, we're not late.

Siz buralı değilsiniz galiba, aksanınızdan belli.

You're not from around here, I think — it's clear from your accent.

The third person is, as always, bare: O değil "It's not him / not that one," Evde değil "He's not at home." There is no ending at all on the third-person negative, just değil standing alone.

Aradığın kitap bu değil, kapağı maviydi.

The book you're looking for isn't this one — its cover was blue.

Annem şu an evde değil, akşam gelecek.

My mother isn't at home right now, she'll come in the evening.

değil also negates location and existence words

Anything that sits in the predicate slot of a "be" sentence — a noun, an adjective, or a locative phrase like evde "at home," burada "here," yanımda "with me" — is negated the same way, with değil.

Telefonum yanımda değil, masada unutmuşum.

My phone isn't with me, I must have left it on the table.

Toplantı bugün değil, yarınmış.

The meeting isn't today — it's tomorrow, apparently.

One important contrast: the existential word var "there is" has its own negative, yok "there isn't," and does not use değil. So "There's no problem" is Sorun yok, never sorun var değil. But once you step from existence ("there is/isn't") to identity or quality ("it is/isn't X"), değil is your tool.

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Two different negatives live side by side: yok negates existence (var → yok, "there isn't"), while değil negates identity and quality (öğrenci değil, "(he) isn't a student"). Pick by meaning: are you denying that something exists, or denying what something is?

değil mi? — the universal tag question

Because değil is so light and mobile, Turkish uses değil mi? as an all-purpose tag question, exactly like English "isn't it?", "right?", "aren't you?". It never changes for person or tense — one frozen phrase covers them all.

Hava bugün çok güzel, değil mi?

The weather's lovely today, isn't it?

Sen de geliyorsun, değil mi?

You're coming too, aren't you?

This is a huge convenience compared with English, which forces you to match the tag to the main verb ("isn't it," "doesn't he," "won't they"). Turkish just says değil mi? every time.

Stacking tense onto değil

In the present, değil plus a person ending is all you need. But değil is also the base onto which the past copula and other copular tenses attach: değildim "I was not," değilmiş "(he) was not, apparently," değilse "if (it) is not." You will meet these on their own pages; for now, just register that the same word değil carries them all.

O zamanlar bu kadar zengin değildik, çok zor günler geçirdik.

Back then we weren't this rich; we went through very hard times.

Common mistakes

❌ Ben öğrencimem.

Incorrect — you can't suffix -mA- to a noun; nouns aren't verbs. Use değil.

✅ Ben öğrenci değilim.

I'm not a student.

❌ Hava güzel değmi?

Incorrect — the tag is the full word değil plus mi: değil mi.

✅ Hava güzel, değil mi?

The weather's nice, isn't it?

❌ Sorun var değil.

Incorrect — existence is negated with yok, not var değil.

✅ Sorun yok.

There's no problem.

❌ O hastamaz.

Incorrect — an adjective never takes a verbal negative ending. Use değil.

✅ O hasta değil.

He/she isn't sick.

❌ Evde değilim sin.

Incorrect — choose one person ending on değil: -im is 'I', -sin is 'you'.

✅ Evde değilsin.

You're not at home.

Every one of these errors comes from treating a noun or adjective as if it were a verb. The fix is always the same: keep the predicate bare and let değil carry both the negation and the person ending.

Key takeaways

Nominal and adjectival predicates are never negated with the verbal suffix -mA-; they are negated with the separate word değil.
değil is invariant and takes the copular person endings: değilim, değilsin, değil, değiliz, değilsiniz, değiller — always with front-unrounded harmony.
The predicate stays bare: hasta değilim, evde değil, o değil.
Existence is negated separately with yok (var → yok); see the negation overview and the guide to değil vs -mA.
değil mi? is a fixed, person-invariant tag question meaning "isn't it? / right?".
Copular tenses (değildim, değilmiş, değilse) all build on this same word değil.

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