EYD

EYD stands for Ejaan Yang Disempurnakan, the standardized Indonesian spelling system. It governs how Indonesian words are written in formal contexts, including education, government, media, and publishing.

The system was developed by the Language Development and Fostering Agency (Pusat Bahasa) within the Ministry of Education and Culture and has served as the reference for Indonesian orthography since its introduction. It superseded earlier spelling conventions and aims to unify spelling across newspapers, textbooks, and official documents.

EYD covers rules on word formation, foreign loanwords, capitalization, hyphenation, and punctuation. It prescribes when to adapt foreign terms to Indonesian phonology and when to retain original spellings, and provides guidelines for proper nouns, acronyms, and abbreviations.

Over time, EYD has been revised to reflect changes in language use and to harmonize with other Indonesian language standards. It remains the basis for official spelling in government and education, while popular usage and media sometimes tolerate variations; dictionaries and style guides of Indonesian continue to reference EYD.