-ası

• IPA^(key): /ɑˈsɯ/

-ası (in words with back vowel harmony)

1. -able, Combines with passive verbs to create verbal adjectives meaning fit for, worthy of some action.

   ‎görül- + ‎-ası → ‎görülesi (“worthy of seeing, worth seeing”)

   ‎okun- + ‎-ası → ‎okunası (“worthy of reading, worth reading”)

   Bu çok yapılası bir ödev değil.

   This homework is not that worthy of doing.

   • 2014 December, Murat Batmankaya, “Edebiyat Çok Azların İşidir”, in Türk Dili‎^[1], volume CVII, number 756, page 343:

     Neredeyse tüm disiplinlerde henüz mutlak bir tanımı yokken “çocuk”un; o muhteşem “şey”, edebiyatta, bilhassa Türk edebiyatında noksansız ve kusursuz şekilde açıklanmakta; en seçkin, en okunası eserler, teorik altyapısı / felsefi arka planı hazır ve nazır, orada öylece durmakta sanki...

     While there is still no absolute definition of "child" in almost all disciplines, literature, especially Turkish literature, explains that magnificent "thing" flawlessly and perfectly. The most distinguished and readable works with their theoretical foundation and philosophical background seem to be just sitting there, ready and waiting.

2. Combines with a possessive suffix and var or yok to expresses a seemingly reasonless desire to do something.

   Eve gidesim var.

   I feel like going home.

   Hiç bekleyesim yok.

   I don't feel like waiting at all.

3. Combines with a possessive suffix and gelmek or tutmak to express the arrival of a seemingly reasonless desire to do something.

   Bir anda sarılasım geldi.

   I suddenly felt like hugging.

• This suffix rarely combines with negative verbs.
• In sense 1, this suffix can't combine with anything other than a passive verb.
• In sense 3, the verb has to be declined in 3rd person singular, and has an inherently perfective meaning. Declining the verb in past tense can imply a desire in the past or the present depending on context. Using tutmak instead of gelmek emphasizes the irrationality of the desire.

• olası

• Turkish: A Comprehensive Grammar, 2005, →ISBN