Introduction
This paper is mainly concerned about developing electronic dictionary for Antonyms and Synonyms in Tamil. This e-dictionary makes learning simple and it covers the lexical items used in Tamil. This widespread introduction of new lexical items would be helpful to the students and research scholars who work in the Tamil Language and Linguistics.  Lexicography means the collection of lexical items and descriptions of the way they are used. A dictionary is a simple tool that helps us to pronounce in the language. It gives meanings to words which cannot be understood or words that have more than one meaning. Besides meaning, it also provides information on the reader syllables, intonation and pronunciation of words. Dictionaries are considered practical sources of information on which learners and teachers can depend. Dictionaries could take different formats like traditional print dictionaries of varies types, handheld electronic dictionaries, concordance, indexes, terminologies, online dictionaries and CD ROM dictionaries depending on the purpose of their required usage.  Handheld electronic dictionaries, also known as "pocket electronic dictionaries" or PEDs, resemble miniature clamshell laptop computers, complete with full keyboards and LCD screens. Because they are intended to be fully portable, the dictionaries are battery-powered and made with durable casing material. Dictionaries have become very important tools for learning of a language especially the new forms of electronic dictionaries. Several technological developments have led to the invention of electronic dictionaries in the operational processes of teaching and learning process. Language can be studied from the point of view of language structure and language use. Study of language structure is called structural or formal linguistic study. Study of language use is called as functional linguistic study. Read the full  article