Azerbaijani has 9 vowel letters: A, E, Ə, I, İ, O, Ö, U, Ü. Three of these are unique to the Azerbaijani Latin script: Ə (schwa/ae sound, as in English "cat"), Ö (front rounded vowel, as in German schön), and Ü (close front rounded vowel, as in German über).
Azerbaijani vowel harmony divides vowels into back vowels (A, I, O, U) and front vowels (E, Ə, İ, Ö, Ü). A crucial distinction: I (undotted, back unrounded vowel) and İ (dotted, front vowel) are separate letters — uppercase İ has a dot, and lowercase ı has no dot. This distinction is the same as in Turkish.
Azerbaijani has 23 consonant letters. Five are unique to the Latin script: Ç (ch-sound), Ğ (soft G, often silent between vowels), Q (uvular stop, deeper than K), Ş (sh-sound), and X (kh-sound, as in Scottish loch). The letter C represents the "j" sound (not "k" as in English), and J represents the "zh" sound (as in French jour).
The uvular consonant Q and the kh-sound X reflect Azerbaijani's Oghuz Turkic heritage. The soft G (Ğ) is notable: between back vowels it becomes a uvular fricative, and between front vowels or after a vowel it often becomes silent, effectively lengthening the preceding vowel — similar to its role in Turkish.
The 9 unique letter pairs of the Azerbaijani Latin alphabet: Ç/ç (ch-sound), Ə/ə (schwa/ae vowel), Ğ/ğ (soft G), İ/ı (dotted uppercase İ — undotted lowercase ı), Ö/ö (front rounded vowel), Q/q (uvular stop), Ş/ş (sh-sound), Ü/ü (close front rounded vowel), X/x (kh-sound).
The İ/ı pair is particularly noteworthy: in Azerbaijani (as in Turkish), the uppercase form of dotted "i" is "İ" (with dot), while the uppercase form of undotted "ı" is "I" (no dot). This four-way distinction — İ, i, I, ı — is the defining orthographic feature of Azerbaijani and Turkish Latin scripts.
Azerbaijani uses Arabic numerals (0–9) in modern writing. The native Azerbaijani number words: sıfır (0), bir (1), iki (2), üç (3), dörd (4), beş (5), altı (6), yeddi (7), səkkiz (8), doqquz (9).
The numbers beautifully illustrate the unique Azerbaijani letters: üç (three) uses both Ü and Ç; dörd (four) uses Ö; beş (five) uses Ş; altı (six) uses undotted ı; səkkiz (eight) uses Ə; doqquz (nine) uses Q. Counting to ten in Azerbaijani demonstrates the entire set of unique letters.
A complete view of all 32 Azerbaijani letters in alphabetical order from A to Z. The official alphabetical order is: A B C Ç D E Ə F G Ğ H X I İ J K Q L M N O Ö P R S Ş T U Ü V Y Z.
Note that X follows H (not at the end), I and İ are adjacent (with I before İ), Q follows K, and Ə follows E. This alphabetical order has been standardised since the 1991 adoption of the Latin script and is used in all official Azerbaijani dictionaries and educational materials.
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