In this paper, it is an object of the present invention that it is looking for a problem that word ‘prefix + suffix’ form has from the synchronic point of view, to confirm the formation process of a word diachronic point of view. And I want to see whether reasonable what to handle the lexical form of the word ‘suffix +prefix’ form based on this. For example, words that Korean is, in synchronic perspective, prefix can be analyzed that <-dung-i> is bound and the suffix. However, from the point of view of word formation, roots and the suffix <-dung-i> seems to have formed by a combination. In other words, in synchronic perspective, it appears to structure ‘suffix’ is bound to ‘prefix’, but in the formation of the word, a combination of ‘suffix’ and ‘root’ actually. On the other hand, most of the existing dictionary words were analyzed in terms of synchronic. Then, in the morphological information in the microstructure, it provides the information. For this reason, I propose to provide morphology information from the analysis of synchronic of words. And also the formation process of the word, it is proposed to provide information in etymology. I believe that it may be used as such a method, to provide accurate information theoretic form of the word. ‘Gun-dam, Nae-tteu-ri-da, Mag-chi, Min-jja, Saeng-kkun, Saeng-jja, Oe-dung-i, Jjog-ji,Chal-gi, Pus-nae-gi, Has-nae-gi’ words that are analyzed in this paper, is the word of the total and 11. In Chapter 3, we review the formation process diachronic of this word, in the fourth chapter, to seek a scheme that can be utilized in information etymology of this word dictionary.