Мястото на българския език сред другите славянски езици

new method is offered for glottometric evaluation of the proximity between the Slavic languages in terms of morphology, based on the calculation of cumulative intersective quotas. The results are shown in a table and on a dendrogram. The dendrogram shows that with respect to morphology, the East Slavonic and West Slavonic groups are clearly differentiated. These two groups are more closely connected with each other than the South Slavonic group of languages which, with respect to morphology, is not a united group. This is due to the specific and significant development processes in the history of the Bulgarian language.