The charts below show the way in which the International Phonetic Alphabet (IPA) represents the Oghuz Turkic substratum of North Azerbaijani, South Azerbaijani, Gagauz, Turkish, and Turkmen pronunciations in Wikipedia articles.
- [c]~[k] (Turkish/Azeri) / [k]~[q] (Turkmen), [ɟ]~[ɡ] (Turkish) / [ɡ]~[ʁ] (Turkmen)[contradictory], [l]~[ɫ] only contrast in loan words before <â, û> vs. <a, u>; in native words, [c/k, ɟ/ɡ, l] occur before the front vowels (/e/, /i/, /ø/, /y/), while [k/q, g/ʁ, ɫ] occur before the back vowels (/a/, /o/, /u/, /ɯ/).
- In many eastern Turkish/Azeri dialects, [c] at the end of a word or before a voiceless consonant may become [ç], as in huge.
- In Azeri, k at the end of a word or before a voiceless consonant may become [ç], as in huge.
- In Turkmen, [h] occurs before front vowels (/e/, /i/, /ø/ and /y/) while [x] occurs before back vowels (/a/, /o/, /u/, /ɯ/).
- In Turkish, the letter ğ (yumuşak g, "soft g") sometimes gives the [j] sound between front vowels but it mostly lengthens the preceding vowel.
- In Schöning, Claus. "Turkmen". The Turkic Languages. Lars Johanson and Éva Á. Csató, eds. London: Routledge, 1998. pg. 262
- In Turkish and Azeri, /ŋ/ appears as an allophone of /n/ before the consonants /g/, /k/, /ɟ/ and /c/.
- Only found in Russian loanwords. In Schöning, Claus. "Turkmen". The Turkic Languages. Lars Johanson and Éva Á. Csató, eds. London: Routledge, 1998. pg. 261
- [w] is the allophone of the /v/ sound after or between vowels in Turkish and Azeri.
- Before liquids /l, m, n, r/
- In Turkish proper, proper nouns are typically stressed on the 2nd or 3rd last syllable (see Sezer stress), and other words (excepting certain unstressed suffixes and stressed verb tenses) are stressed on the last syllable.
- Şapka (Turkish for "hat") [^] is a sign which indicates both the vowel length and indicates if the letter k should read as /c/ and the letter l should read as [l] before the dark vowels /ɑ/ and /u/.
Yet the şapka is primarily used for indicating palatalization instead of length. For example, the word katil means "murder" when pronounced as /kɑtil/, yet it means "killer" when pronounced as /kɑːtil/. The letter a is left unmarked even if it is long, because the sound /k/ doesn't become /c/ in this case.
î is an exception, for it only indicates the vowel length.