ḈḈ Ḉ Ḉ (minuscule: ḉ) is a Latin script letter formed from "C" with added acute accent and cedilla. Usage. It is used in the Estonian KNAB transliteration standard when representing Cyrillic letters of several Northwest Caucasian languages. In transliteration of Abaza, it represents the letter ЧӀ. In transliteration of Abkhaz, it represents the letter Ҷ. In transliteration of Adyghian, it represents the letter КӀ. Unicode. The unicode codepoints are for the upper-case letter, and for the lower-case one. Ḉ Ḉ (minuscule: ḉ) is a Latin script letter formed from "C" with added acute accent and cedilla. Usage. It