This is a little provocating question, I admit.

Turkish adjectives are not declined. This is the first good news for all learners especially because the group of adjectives is very wide. For instance, basic numerals are adjectives just like many stems of indefinite and determinative pronouns.

The problem is that when you take a closer look, adjectives seem to decline all the time.

Uçan balonlar ne kadar yükseğe çıkabilir?

Ucuza al, pahalıya sat.

Kırmızıdan sonra dirençleri arttı.

Uzunla kısanın, şişmanla zayıfın arkadaşlığından korkacaksın.

I understand these adjectives are used as nouns and their governing word has been dropped from the sentence. But it is still amazingly simple: no derivation is needed, just go ahead and paste the case endings straight to the adjective. Maybe we should write the rule again: Turkish adjectives are not declined, except when they are declined, and in this case they are interpreted as nouns.

The real question is, does it work this way with all adjectives or are some of them more liberal than others? In other words, can any adjective be used as a noun?

You know, scalpel, for a moment I thought you were serious.

Declining adjectives certainly doesn’t increase the informativeness of a sentence most of the time. Yet in the agglutinative Finnish language we do it conscientiously:

         suur|i|ssa talo|i|ssa ‘büyük ev|ler|de’

Congruation of adjective attributes increases the cohesion of phrases but also lengthens the words unnecessarily. (Finnish numerals  -  every part declined  -  are a problem not only for learners.)

While learning Turkish I have faced only one situation where I desperately feel like declining the adjective. You could call it changing of the quality. (In Finnish we have a special case for it.) I mean sentences like

         I painted the door yellow.
         The girl’s face turned red.
         Always call the intelligent woman beautiful and the beautiful woman intelligent.

The underlined adjective is the result of the action. How is this obvious problem solved in Turkish? Is the meaning of quality change hidden into the verb or what?

Sincere question here. And I hope I don´t sound ignorent

I don´t believe I am familiar with what is meant by nouns and adjectives "declining"  At least in English, the word "decline" means to refuse or to not accept, which is what I am most familiar with. how is it being related to the language here? 

Your question is good, Mavili. You know, I am not an English speaker and for a moment I was scared I have really used the wrong term. So I went to check it.

My Swedish teacher was always very strict about using the correct grammatical terms: we conjugated verbs and declined nouns. Actually we are talking about the same thing: adding case and personal endings, plural and tense marks etc. on word roots. I guess the general English term is to inflect but I think - and I am not sure - that I have seen the verb conjugate used for nouns, too. Maybe it is not such a strict rule in English (and what does it matter, as you hardly inflect your words anyway). Talking about Turkish, it might be useful to separate the two terms because declining means adding certain kinds of elements and conjugation other kinds of elements to the root.

I am walking on thin ice always with my English and I wish someone will correct me when I err.

You are spot on with your thought of the English word "inflect". (change the form of a word to express grammatical function) I think I understand now what is meant by declining of the adjectives. I´ve always related conjugation to verbs first, and maybe it was to inflect for English words However I can´t remember much grammar from school.

And there´s probably lots of mistakes, but I wanted to give the first 2 of your sample sentences a try.

I painted the door yellow. -Kapıyı sarı boyuyordum.

Could you translate to me what is the meaning of the two last sentences presented in the first post? I just can´t translate them properly myself

I´m sorry, I should have added the translations when I wrote it but I didn´t notice:

Kırmızıdan sonra dirençleri arttı. ´After the red their resistance got stronger.´ (It´s about football and the red thing is the card.)

Uzunla kısanın, şişmanla zayıfın arkadaşlığından korkacaksın. ´There is reason to be afraid of (lit. you will be afraid of) the friendship between the tall and the short (person), the fat and the skinny (person).´

ِشكراً جزيلاً على ترجمتك

Thanks for the translation.

Hey sufler, may I ask something?

Can you write Turkish transliteration of the Arabic sentence you wrote, the first word is "şükran" I think, and the last word is "tercümeten"?