Gagauz has 9 vowels: A, Ä, E, I (back unrounded), İ (dotted, front), O, Ö, U, and Ü. The letter Ä (a-umlaut) is the most distinctive — it represents a front open vowel similar to "a" in English "cat" and is absent from Turkish and Azerbaijani Latin alphabets.
Like all Oghuz Turkic languages, Gagauz follows vowel harmony: words use either front vowels (Ä, E, İ, Ö, Ü) or back vowels (A, I, O, U). The presence of Ä as a separate front vowel gives Gagauz a nine-vowel system, richer than Turkish (which has eight). Gagauz vowel harmony operates on the same Oghuz principles as Turkish.
The Gagauz consonant set includes two unique consonants: Ç (ch-sound, as in "church") and Ş (sh-sound). The contrast between C (j-sound, like English "jump") and J (zh-sound, like French "jour") follows the same convention as Turkish.
Gagauz lacks the letter Q (uvular stop) found in Azerbaijani and Crimean Tatar Latin alphabets, and lacks Ğ (soft G) — features that distinguish it from other Turkic Latin scripts. Note also the absence of the letter X compared to Turkish, which uses X in loanwords. Gagauz consonant phonology closely mirrors that of Turkish and Azerbaijani.
The 6 pairs of unique letters in the Gagauz Latin alphabet: Ä/ä (front open ae-vowel), Ç/ç (ch-sound), İ/i (dotted I, front vowel), Ö/ö (front rounded ö), Ş/ş (sh-sound), and Ü/ü (front rounded ü).
The letter Ä is the most distinctive feature of Gagauz orthography among Turkic alphabets. In vowel harmony, Ä pairs with E, İ, Ö, and Ü as front vowels. For example: ädä (island) uses Ä, while ada uses A — both exist as distinct words. The dotted İ (uppercase) has lowercase i; the undotted I has lowercase ı.
Gagauz uses Arabic numerals (0–9) in modern writing. The number words: sıfır (0), bir (1), iki (2), üç (3), dört (4), beş (5), altı (6), yedi (7), sekiz (8), dokuz (9).
The Gagauz number words are nearly identical to their Turkish equivalents, reflecting the close Oghuz relationship: compare Gagauz üç with Turkish üç (three), Gagauz dört with Turkish dört (four). The words üç and dört showcase the unique vowels Ü and Ö; beş showcases the unique consonant Ş.
A complete view of all 31 Gagauz letters in alphabetical order from A to Z.
The Gagauz Latin alphabet places its unique letters adjacent to their base forms: Ä after A, Ç after C, İ after I, Ö after O, Ş after S, Ü after U. This 31-letter Latin alphabet has been the official writing system of Gagauz in Gagauzia since 1996, replacing the Soviet Cyrillic alphabet adopted in the late 1950s.
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