The purpose of the proposed study is to determine universal and specific features in the systems of compound abbreviated words of some Indo-European languages (Ukrainian, Polish, English, French, Italian, German), which are inflectional in their morphological nature and have letter graphics, and the Chinese language, which is the root language and has hieroglyphic graphics. The object of study is the abbreviations of the above-mentioned languages and trends in the functioning of these language units. The subject of research is the relationship between the derivatives of compound abbreviated units and those language units that act as creative for them. The material of the study was taken from several dictionaries of abbreviations, and many lists and realities available for review. In total, more than 4500 language units were considered, of which almost 1150 (in total from different languages) were analyzed. It should be noted that only those units that are formed from word combinations, i.e. compound abbreviated words, were studied; Abbreviations of one word were not considered as an object of analysis. The main methods of research are general methods of analysis and synthesis, procedures of methods of comparative, word-forming, syntactic, graphic analysis and descriptive method. The result of the analysis is presented in a number of conclusions. The formation and functioning of compound abbreviated words is a linguistic universal at the present stage of language development. Representatives of the linguistic schools formed on the basis of the Indo-European languages consider the law of economy of speech means to be the “driving force” of the abbreviation process. In Chinese linguistics, there is an opinion that the phenomenon of contraction is natural for the Chinese language, because it reflects the ancient monosyllabicity of Chinese words. In different languages, the set of ways to form compound abbreviated words depends on their typological features, the rules of the order of words in combinations, graphic features of written speech, pronunciation features, and methods of word formation.