Décolesan

Décolesan is a constructed language (conlang) designed for international communication and cultural exchange. It is part of the late 20th-century wave of auxiliary languages that emphasize regular grammar, limited irregularities, and accessibility for learners.

The development started in the early 1990s through an international collaboration coordinated by the Institute for Constructed Languages. Linguists, teachers, and polyglots from several countries contributed to its phonology, grammar, and core vocabulary. The name Décolesan is intended to evoke learning and community rather than reference a real place.

Phonology and writing: Décolesan uses a Latin-based alphabet with five vowel sounds and about twenty consonants; most sounds have a single, consistent pronunciation. The standard orthography employs diacritics to mark stress and some vowel qualities. Grammar: the language is predominantly analytic, with a fixed subject–verb–object (SVO) word order. There is no grammatical gender. Verb forms rely on aspect markers; tense is expressed with particles before the verb. Nouns do not change for number or case, but a simple plural suffix -s can be added, and determiners or quantifiers precede nouns. Adjectives typically follow nouns and agree in number with them through the plural suffix.

Vocabulary draws from major European languages and selected global languages, organized around a core set of roots designed for easy recognition and compound formation. The language supports loanwords and neutral terms to facilitate cross-cultural borrowing. The writing system is Latin-based and used in education and media within online communities.

Today, Décolesan has a small but active speaker base, with online courses, dictionaries, and periodic newsletters. It is not an official language of any country but is used in literature, language-learning circles, and intercultural projects.