Ekfrassi aims at the development of an innovative system for the writing support in Greek. Moreover, unique and valuable language resources will be developed and further exploited. Both system and resources consist independent reusable software components, which can be integrated into numerous applications. The main objective of the project is to help writers in matters of expression, i.e when they cannot find the word or phrase that conveys better their thought or when they are not certain about the way a particular word or phrase is used or declined. Ekfrassi combines the features of a thesaurus containing synonyms/antonyms, of a monolingual dictionary, as well as of a bilingual (Greek-English) one and of a spelling checker. At the same time, it is based on the conceptual organisation of the language material using Semantic Web techniques. This system can support areas, such as teaching, journalism, translation and, in broader terms, editions. Besides, through the project, a special module concerning Multi-word Recognition and Extraction will be generated. Although multi-word expressions are widely used in written language, they are not adequately covered by current paper and electronic dictionaries, since they are frequently renewed. The rich morphology of Greek as well as its syntactic specificities will be taken into account by the specific module, which will support the recognition of general language expressions, as well as of terms, which are very important procedures in text processing. The language material database consists an extremely significant part of the project. It will contain Greek and English material which a) follows the models of outstanding dictionaries (Roget’s Thesaurus, acting also as the model of the well-known WordNet, as well as of the Onomastikon of Th. Vostantzoglou) and b) provides whatever is said or written about a concept, for example all the nouns, verbs, adverbs, expressions used in Greek to define motion.