Possessive Suffixes: My, Your, His/Her, Our, and Their

Six suffixes carry the actual weight of “my,” “your,” and “his/her/its/our/their” in Turkish. The separate determiner words — benim, senin, onun — are optional emphasis you can drop at will. The suffix glued onto the end of the noun is the part that’s never optional, and it’s chosen by the same vowel-harmony logic that runs through the rest of the language.

What these suffixes do

A possessive suffix attaches directly to a noun to mark who it belongs to, independent of whether a determiner word like benim or senin is anywhere in the sentence:

• kitap (book) → kitabım (my book)
• ev (house) → evin (your house)
• araba (car) → arabası (his/her car)

Say kitabım on its own and “my book” is complete — no separate word for “my” is required, because the suffix has already done that job.

Forming it

Six persons, four vowel-harmony classes based on the noun’s last vowel. The parenthesized letter is a linking vowel that shows up after a noun ending in a consonant and drops after a noun ending in a vowel — except for third-person singular, whose linking letter is the consonant -s-, which appears (rather than drops) after a vowel:

(Third-person plural only harmonizes two ways, the same as the plural suffix -ler/-lar it’s built from — that’s why its o/u and ö/ü cells repeat the a/ı and e/i cells.)

Seeing the whole paradigm on one consonant-final noun and one vowel-final noun makes the buffer behavior concrete:

• ev (house, consonant-final): evim (my), evin (your), evi (his/her), evimiz (our), eviniz (your, pl.), evleri (their)
• araba (car, vowel-final): arabam (my), araban (your), arabası (his/her), arabamız (our), arabanız (your, pl.), arabaları (their)

Notice that on araba, the linking vowel simply disappears for every person except third singular, which instead gains the buffer consonant -s- to keep the two vowels from colliding.

Exceptions worth knowing

Consonant softening can change the noun’s last letter before the suffix ever attaches. Voiceless stops at the end of a noun — p, ç, t, k — often soften to b, c, d, ğ once a vowel-initial suffix follows, which is exactly what a possessive suffix is: kitap (book) → kitabım (my book), not kitapım. This softening pattern shows up across many suffixes, not just possessives, and gets its own dedicated lesson — for now, just recognize it when you see it.

The buffer letter is a consonant for third-singular but disappears entirely for the rest. Other Turkish suffixes that need a buffer before a vowel-final word — the dative and accusative, for example — use -y-. Possessive suffixes never do: first- and second-person forms simply drop their linking vowel after a vowel-final noun, and only third-singular inserts a consonant, and that consonant is -s-, not -y-.

Evleri is genuinely three ways ambiguous. It can be ev + the third-plural suffix -leri (“their house”), or the already-plural evler + the third-singular suffix -i (“his/her houses”) — and because attaching -leri to an already-plural noun would just repeat the plural marker, “their houses” collapses onto the exact same word, evleri, too. Context, or an added onların (their) or onun (his/her), is what actually disambiguates it in speech.

The suffix alone is a complete sentence; the determiner word is emphasis only. Kitabım masada (“my book is on the table”) needs nothing else — benim kitabım masada says the identical thing with extra stress on whose book it is.

Examples

• Çantam çok ağır. — My bag is very heavy.
• Telefonun masada mı? — Is your phone on the table?
• Kardeşi Ankara’da yaşıyor. — His/her sibling lives in Ankara.
• Evimiz şehir merkezinde. — Our house is in the city center.
• Arabanız çok hızlı. — Your (plural/formal) car is very fast.
• Çocukları okula gidiyor. — Their child(ren) is/are going to school.

The last example carries the same number ambiguity as evleri: çocukları could mean “their child” or “their children,” and only context (or a clarifying word) tells you which.

Try it yourself

Babi, Speafy’s AI tutor, will walk you through the same noun across all six persons until the buffer switch — dropped vowel for most persons, but a -s- for third singular — stops feeling like an exception and starts feeling automatic, and Speafy’s FSRS-based flashcards keep the six forms straight long after the lesson ends.