In conversational Turkish, the third-person "to be" (is/are) is often implied without any suffix (for example, Bu ev büyük means "This house is big"). However, to state a universal truth, an encyclopedic fact, or an official rule, you add the factual copula suffix -DIr.
This suffix indicates an objective fact and is heavily used in news broadcasts, textbooks, and formal presentations.
Four-Way Vowel Harmony
The factual copula follows four-way vowel harmony:
- -dır (after a, ı)
- -dir (after e, i)
- -dur (after o, u)
- -dür (after ö, ü)
Consonant Mutation
If the word ends in a voiceless consonant (f, s, t, k, ç, ş, h, p), the d hardens into a t, creating -tır, -tir, -tur, and -tür.
Stating General Existence (Vardır)
You already know that var means "there is" or "there are". By attaching the factual suffix, we create vardır.
While var points out something present at a specific moment, vardır is used to state that something exists as a matter of universal or geographical fact.