Diphthongs and Double Vowels
Grammar Rule in 30 Seconds
In Mongolian, vowel length changes word meaning; always distinguish between short and long vowels to be understood correctly.
- Long vowels are written as double letters (aa, ee, oo, uu, etc.) and held for twice the duration.
- Short vowels are single letters and are pronounced quickly and crisply.
- Diphthongs like 'ai' or 'ui' are pronounced as a smooth glide between two vowel sounds.
Vowel Length Examples
| Word | Meaning | Vowel Type | Pronunciation Tip |
|---|---|---|---|
|
Ав
|
Take
|
Short
|
Quick
|
|
Аав
|
Father
|
Long
|
Hold
|
|
То
|
Design
|
Short
|
Quick
|
|
Тоо
|
Number
|
Long
|
Hold
|
|
Ху
|
Not a word
|
Short
|
Quick
|
|
Хүү
|
Son
|
Long
|
Hold
|
Meanings
Mongolian uses vowel length to distinguish between different words (phonemic length). A long vowel is essentially two short vowels pronounced as one continuous, elongated sound.
Long Vowels
Vowels held for a longer duration, indicated by doubling the vowel character.
“Баатар (hero)”
“Хүү (son)”
Diphthongs
A combination of two vowel sounds within the same syllable.
“Сайн (good)”
“Уйлах (to cry)”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Short Vowel
|
Single V
|
Ав (Take)
|
|
Long Vowel
|
Double V
|
Аав (Father)
|
|
Diphthong
|
V1 + V2
|
Сайн (Good)
|
|
Question
|
Vowel length remains
|
Сайн байна уу?
|
|
Negative
|
Vowel length remains
|
Би авахгүй
|
|
Plural
|
Vowel length remains
|
Хүүхдүүд (Children)
|
Formalitätsspektrum
Аав сайн байна. (Family)
Аав сайн. (Family)
Аав гоё байна. (Family)
Аав тасархай! (Family)
Vowel Length Map
Short
- Ав Take
Long
- Аав Father
Diphthong
- Сайн Good
Beispiele nach Niveau
Аав сайн байна.
Father is good.
Би тоо мэднэ.
I know the number.
Энэ бол хүү.
This is a son.
Сайн байна уу?
Hello?
Бидний гэр том.
Our home is big.
Тэр ном уншдаг.
He reads books.
Хайр бол чухал.
Love is important.
Уйлах хэрэггүй.
No need to cry.
Баатар бол зоригтой хүн.
A hero is a brave person.
Бидний ажил их байна.
We have a lot of work.
Тэрээр маш их уурласан.
He was very angry.
Энэ бол миний үзэл бодол.
This is my opinion.
Түүний үйлдэл нь гайхалтай.
His action is amazing.
Бидний зорилго тодорхой.
Our goal is clear.
Хууль бол бүгдэд тэгш.
The law is equal for all.
Тэрээр ихээхэн амжилт гаргав.
He achieved great success.
Түүний ярианы өнгө аяс өөрчлөгдөв.
His tone of voice changed.
Энэ бол нийгмийн үзэгдэл юм.
This is a social phenomenon.
Тэрээр үргэлж үнэнч байдаг.
He is always loyal.
Бидний эв нэгдэл чухал.
Our unity is important.
Тэрээр өөрийн үзэл бодлыг илэрхийлэв.
He expressed his own opinion.
Энэ нь түүхэн үйл явдал юм.
This is a historical event.
Түүний сэтгэлгээний цар хүрээ өргөн.
The scope of his thinking is broad.
Бидний эвлэрэл удахгүй болно.
Our reconciliation will happen soon.
Leicht verwechselbar
Learners often fail to distinguish them in rapid speech.
Häufige Fehler
Ав (pronounced long)
Ав (short)
Аав (pronounced short)
Аав (long)
Са-ин (two syllables)
Сайн (one syllable)
Хүү (pronounced short)
Хүү (long)
Misplacing stress
Natural rhythm
Ignoring harmony
Following harmony
Inconsistent duration
Consistent duration
Satzmuster
Миний ___ сайн байна.
Энэ бол ___.
Би ___ гэж бодож байна.
Түүний ___ маш өндөр.
Real World Usage
Бууз авъя.
Сайн уу?
Миний зорилго бол...
Энэ хаана вэ?
Гайхалтай!
Аав, хоол сайн уу?
Listen closely
Don't rush
Minimal pairs
Politeness
Smart Tips
Hold the sound for two beats.
Glide smoothly between the two vowels.
Exaggerate the length at first.
Focus on the duration of the vowel.
Aussprache
Long Vowels
Hold for 2 beats.
Short Vowels
Hold for 1 beat.
Declarative
Аав сайн байна ↘
Falling intonation at the end.
Einprägen
Eselsbrücke
Double the letter, double the time; if it's single, keep it prime (fast).
Visuelle Assoziation
Imagine a long rubber band stretching for double vowels and a quick snap for single ones.
Rhyme
Double letters hold the sound, single ones are quick and round.
Story
A father (аав) takes (ав) his son (хүү) to count (тоо) the numbers. He holds the long vowels like a long hug.
Word Web
Herausforderung
Record yourself saying 'Ав' and 'Аав' and listen to the difference in duration.
Kulturelle Hinweise
The standard dialect uses these rules strictly.
Vowel length rules differ slightly due to dialectal shifts.
Uses traditional script, but the phonology remains similar.
Mongolian vowel length evolved from Proto-Mongolic, where vowel duration was already a key feature.
Gesprächseinstiege
Таны аав сайн уу?
Та хэдэн тоо мэддэг вэ?
Таны хувьд сайн найз гэж хэн бэ?
Таны үзэл бодол нийгмийн өөрчлөлтийн талаар ямар байна?
Tagebuch-Impulse
Häufige Fehler
Test Yourself
А_в (Father)
Select the correct spelling.
Find and fix the mistake:
Би то мэднэ. (I know the number)
Arrange the words in the correct order:
All words placed
Click words above to build the sentence
Match each item on the left with its pair on the right:
Long vowels are written as double letters.
A: Сайн байна уу? B: ___
Use 'баатар' and 'зоригтой'.
Score: /8
Ubungsaufgaben
8 exercisesА_в (Father)
Select the correct spelling.
Find and fix the mistake:
Би то мэднэ. (I know the number)
сайн / Аав / байна
Ав / Аав
Long vowels are written as double letters.
A: Сайн байна уу? B: ___
Use 'баатар' and 'зоригтой'.
Score: /8
FAQ (8)
To indicate a long duration, which changes the word's meaning.
No, they are a single syllable with a glide.
About twice as long as a short one.
No, it's independent of stress.
Only in very informal settings; avoid it for clarity.
Mostly, but some dialects have variations.
You might say a different word, causing confusion.
Record yourself and compare with native audio.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Chōon (long vowels)
Mongolian vowel harmony makes it more complex.
Madd (long vowels)
Mongolian uses them for lexical distinction.
Dehnungs-h
Mongolian is strictly phonemic.
None
Length does not change meaning in Spanish.
None
Length is not phonemic in French.
None
Tones vs. Length.
