The Khmer alphabet is one of the most visually striking writing systems in Southeast Asia. With its elegant curves and intricate design, it has been used to write the Cambodian language for over a thousand years.
Here's what makes Khmer unique: the script has two series of consonants that affect how vowels are pronounced. Once you understand this system, reading Khmer becomes much more predictable.
Khmer has 15 vowels and 35 consonants (19 A-series, 16 O-series), plus 16 dependent vowel signs.
Overview of the Khmer Script
Khmer is an abugida - a writing system where consonants carry an inherent vowel sound that can be modified by vowel signs. This is similar to Thai, Lao, and the Indic scripts it descended from.
| Feature | Khmer |
|---|
| Consonants | 33 |
| Independent Vowels | 14 |
| Dependent Vowel Signs | 16+ |
| Numerals | 10 |
| Direction | Left to right |
| Spaces | Between clauses, not words |
The script was derived from the Brahmi script of ancient India through the Pallava script, giving it connections to Thai, Lao, Burmese, and the scripts of South Asia.
The Two Consonant Series
The most important concept in Khmer is the two-series system. Every consonant belongs to either:
- A-series (First Series): The inherent vowel is "aa" (អា)
- O-series (Second Series): The inherent vowel is "oo" (អូ)
This affects how vowel signs are pronounced. The same vowel sign produces different sounds depending on which series the consonant belongs to.
| A-Series (First Series) | O-Series (Second Series) |
|---|
កka ខkha ចca ឆcha ដta ឋtha ណna តta ថtha បpa ផpha រra លla ឝsha ឞssa សsa ហha ឡla អa | គga ឃgha ងnga ជja ឈjha ញnya ឌda ឍdha ទda ធdha នna ពba ភbha មma យya វva |
| Inherent vowel: /aa/ | Inherent vowel: /oo/ |
The 33 Consonants
កka
ខkha
គga
ឃgha
ងnga
ចca
ឆcha
ជja
ឈjha
ញnya
ដta
ឋtha
ឌda
ឍdha
ណna
តta
ថtha
ទda
ធdha
នna
បpa
ផpha
ពba
ភbha
មma
យya
រra
លla
វva
ឝsha
ឞssa
សsa
ហha
ឡla
អa
| Place | Characters |
|---|
| Velar | កkaA | ខkhaA | គgaO | ឃghaO | ងngaO | | | | | |
| Palatal | ចcaA | ឆchaA | ជjaO | ឈjhaO | ញnyaO | យyaO | ឝshaA | ឞssaA | | |
| Dental | ដtaA | ឋthaA | ឌdaO | ឍdhaO | ណnaA | តtaA | ថthaA | ទdaO | ធdhaO | នnaO | រraA | លlaA | សsaA | ឡlaA |
| Labial | បpaA | ផphaA | ពbaO | ភbhaO | មmaO | វvaO | | | | |
Independent Vowels
Khmer has a set of independent vowels that can stand alone or begin syllables:
| Letter | Name | Sound |
|---|
| ឥ | I | i |
| ឦ | Ii | ii |
| ឧ | U | u |
| ឨ | Uu | uu |
| ឩ | Uu | uu |
| ឪ | Oe | oe |
| ឫ | Rue | rue |
| ឬ | Ruu | ruu |
| ឭ | Lue | lue |
| ឮ | Luu | luu |
| ឯ | E | e |
| ឰ | Ai | ai |
| ឱ | O | o |
| ឲ | Ao | ao |
| ឳ | Au | au |
Dependent Vowel Signs
Khmer vowels are written as signs that attach to consonants in different positions:
| Position | Example | Description |
|---|
| Above | កិ (ki) | Vowel written above consonant |
| Below | កុ (ku) | Vowel written below consonant |
| Before | កេ (ke) | Vowel written to the left |
| After | កា (kaa) | Vowel written to the right |
| Around | កោ (kao) | Vowels surrounding consonant |
| Sign | Name | Pronunciation | With ក |
|---|
| ា | Aa | aa | កា |
| ិ | I | i | កិ |
| ី | Ii | ii | កី |
| ឹ | Ue | ue | កឹ |
| ឺ | Uu | uu | កឺ |
| ុ | U | u | កុ |
| ូ | Uu | uu | កូ |
| ួ | Uo | uo | កួ |
| ើ | Ae | ae | កើ |
| ឿ | Oe | oe | កឿ |
| ៀ | Ie | ie | កៀ |
| េ | E | e | កេ |
| ែ | Ae | ae | កែ |
| ៃ | Ai | ai | កៃ |
| ោ | O | o | កោ |
Subscript Consonants (Coeng)
When two consonants appear together without a vowel between them, the second consonant is written as a subscript form called coeng (ជើង, meaning "foot").
Example: ស្រ (sr-) - the ្រ is the subscript form of រ
This is similar to consonant stacking in other Brahmic scripts.
Tips for Learning
What Makes Khmer Easier
- Consistent rules: Once you understand the two-series system, pronunciation follows clear patterns
- No tones: Unlike Thai or Vietnamese, Khmer is not a tonal language
- Logical organization: Consonants are grouped by place and manner of articulation
What Makes Khmer Challenging
- Complex vowel system: Vowels change sound based on consonant series
- Subscript forms: Consonant clusters use special stacked forms
- No word spaces: Khmer traditionally doesn't use spaces between words
- Many similar-looking letters: Some consonants require careful distinction
Recommended Learning Order
- First: Learn the 5 basic vowel signs (ា, ិ, ី org ុ, ូ)
- Second: Master common A-series consonants (ក, ត, ប, ស, ម)
- Third: Add common O-series consonants (គ, ទ, ព, ន)
- Fourth: Learn vowel variations between series
- Fifth: Tackle subscript consonants and complex clusters
Common Words to Practice
| Khmer | Romanization | Meaning |
|---|
| សួស្តី | suostei | Hello |
| អរគុណ | orkun | Thank you |
| បាទ/ចាស | bat/chas | Yes (m/f) |
| ទេ | te | No |
| កម្ពុជា | kampuchea | Cambodia |
| ភាសាខ្មែរ | pheasa khmae | Khmer language |
Practice Tools
Quick Reference
All 33 Consonants
កkaខkhaគgaឃghaងngaចcaឆchaជjaឈjhaញnyaដtaឋthaឌdaឍdhaណnaតtaថthaទdaធdhaនnaបpaផphaពbaភbhaមmaយyaរraលlaវvaឝshaឞssaសsaហhaឡlaអa
A-Series (First Series)
កkaខkhaចcaឆchaដtaឋthaណnaតtaថthaបpaផphaរraលlaឝshaឞssaសsaហhaឡlaអa
O-Series (Second Series)
គgaឃghaងngaជjaឈjhaញnyaឌdaឍdhaទdaធdhaនnaពbaភbhaមmaយyaវva
Ready to start? Our Khmer Alphabet Practice tool uses spaced repetition to help you memorize all 33 consonants efficiently. It includes audio pronunciation for every character.
