Vowel harmony: the ending bends to the word

Turkish endings are not fixed shapes the way English ones are. The plural is not always -ler, the locative not always -de: the vowel of the ending copies the last vowel of the word it is glued to. The point is not pedantry — it keeps the whole word pronounceable in one mouth motion, without a gear change halfway through. For example: “ev → evde” — a house → at home. A rule from the Turkish course: worked out on…

Updated September 1, 2026 · Lingofly

How it works

Turkish endings are not fixed shapes the way English ones are. The plural is not always -ler, the locative not always -de: the vowel of the ending copies the last vowel of the word it is glued to. The point is not pedantry — it keeps the whole word pronounceable in one mouth motion, without a gear change halfway through.

The working rule for now: the ending repeats the last vowel of the stem along the row — after a, ı take , after e, i take -i, after o, u take -u, after ö, ü take .

English does a quieter version of the same thing without noticing: the plural -s of cats, dogs and houses is really three different sounds, each matching the one before it. Turkish simply writes the change down. Hence evevde (at home), but okulokulda (at school): the same 'at' ending both times.

Table

Vowel harmony: the ending bends to the word
last vowel of the stemvowel of the endingexample
a, ııkitap → kitabım
e, iiev → evim
o, uuokul → okulum
ö, üügöz → gözüm

By example

  • ev → evde
    a house → at home
  • okul → okulda
    a school → at school
  • göz → gözde
    an eye → in the eye

How the rule settles in your head

A rule is not memorized from an explanation. It is memorized from an attempt to use it and a mistake — that is why the app delivers it mixed in with words, not as a separate lesson: it resurfaces exactly where you forgot it.

Frequently asked

Turkish vowel harmony?

Turkish endings are not fixed shapes the way English ones are. The plural is not always -ler, the locative not always -de: the vowel of the ending copies the last vowel of the word it is glued to. The point is not pedantry — it keeps the whole word pronounceable in one mouth motion, without a gear…

Why evde but okulda?

The working rule for now: the ending repeats the last vowel of the stem along the row — after a, ı take -ı, after e, i take -i, after o, u take -u, after ö, ü take -ü.

How to pick the vowel in a Turkish ending?

English does a quieter version of the same thing without noticing: the plural -s of cats, dogs and houses is really three different sounds, each matching the one before it. Turkish simply writes the change down. Hence ev → evde (at home), but okul → okulda (at school): the same 'at' ending both…

Why ı, i, u and ü are one Turkish ending?

English does a quieter version of the same thing without noticing: the plural -s of cats, dogs and houses is really three different sounds, each matching the one before it. Turkish simply writes the change down. Hence ev → evde (at home), but okul → okulda (at school): the same 'at' ending both…

What does it look like in an example sentence Turkish?

“ev → evde” — a house → at home. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

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