Template:Indic letters/Khmer with matras

Note: The vowels (other than vocalic liquids) are shown using the ALA-LC scheme.

Pali and Sanskrit are written as abugidas with the lack of a vowel between consonants notated as consonants indicated by vertically stacking the consonants without their touching. For phonetically final consonants, the lack of a vowel is marked by virama.

The Khmer language works the same, except that a different method is used for the last consonant of a word. The final consonant in a consonant stack is indicated as having no implicit vowel by applying tôndôkhéad to it. By default, a consonant surmounted by robat is silent and lacks an inherent vowel. The yŭkôlpĭntŭ positively indicates the presence of a final implicit vowel, plus its automatic glottal stop. Otherwise, there is no final vowel, unless the word is of Pali or Sanskrit origin, in which case the spelling is ambiguous. Up until the start of the 20th century, the lack of a final vowel could be indicating by subscripting the consonant, as then done in Lao and in other non-Indic languages using the Tai Tham script.