English

How sure the speaker is: olabilir, olmalı, olsa gerek and -dır

English grades its certainty with adverbs: maybe, probably, surely. Turkish does it with verb tails, and its steps are more even. For example: “Bu saatte evdedir” — At this hour he is presumably home. A rule from the Turkish course: worked out on examples, not memorized as a wording.

Updated September 1, 2026 · Lingofly

How it works

English grades its certainty with adverbs: maybe, probably, surely. Turkish does it with verb tails, and its steps are more even.

-ebilir is possible but not a fact: gelebilir, he may come. The same tail also means know how, and only the sense of the phrase tells them apart.

-dır on a third person in speech means a guess: Bu saatte evdedir, he is probably home at this hour. On a notice the very same tail means the opposite, a flat rule: yasaktır.

-malı in the same slot is a conclusion drawn from signs: Telefonu açmıyor, uyuyor olmalı. The trap is reading a conclusion as a duty: about yourself olmalı would mean I have to. And Yağmur yağmış reads a trace: unseen, but the tarmac is wet.

Table

How sure the speaker is: olabilir, olmalı, olsa gerek and -dır
the devicethe degree of certaintyexampletranslation
-abilirpossible but not certaingelebilirhe may come
belkimaybebelki gelirmaybe he will come
-dır in speechan assumptionevdedirpresumably at home
-dır in a documentcategoricalyasaktırprohibited
galiba / herhaldemost likelygaliba unuttuhe probably forgot
-malı / -meli, 3rd personan inference from signsyorgun olmalıhe must be tired
olsa gerekthe same inference, bookishuyumuş olsa gerekhe must have fallen asleep
-mışan inference from a traceyağmur yağmışit must have rained
kesin / mutlakanear-certaintykesin gelirhe will come for sure

By example

  • Bu saatte evdedir
    At this hour he is presumably home
  • Telefonu açmıyor, uyuyor olmalı
    He is not picking up — he must be sleeping
  • Yağmur yağmış, yollar ıslak
    It must have rained: the roads are wet

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

Olabilir vs olmalı?

English grades its certainty with adverbs: maybe, probably, surely. Turkish does it with verb tails, and its steps are more even.

Olmalı or olsa gerek: how to say must be in Turkish?

-ebilir is possible but not a fact: gelebilir, he may come. The same tail also means know how, and only the sense of the phrase tells them apart.

What -dır at the end of a Turkish word means?

-dır on a third person in speech means a guess: Bu saatte evdedir, he is probably home at this hour. On a notice the very same tail means the opposite, a flat rule: yasaktır.

Galiba vs herhalde?

-malı in the same slot is a conclusion drawn from signs: Telefonu açmıyor, uyuyor olmalı. The trap is reading a conclusion as a duty: about yourself olmalı would mean I have to. And Yağmur yağmış reads a trace: unseen, but the tarmac is wet.

What does it look like in an example sentence Turkish?

“Bu saatte evdedir” — At this hour he is presumably home. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

Next

Test the rule on examplesPractice