Способы усиления и ослабления отрицания в болгарском языке в сопоставлении с русским и польским языками

The paper describes ways to intensify of weaken negation in three Slavic languages, representing the south, east and west subgroups. (Greater attention is cantered on Bulgarian). The study is based on ample factual material. The common characteristics of the category under discussion are traced out in Bulgarian, Russian and Polish. A number of differences in the functions of negation are established across the three languages. The analysis of the concrete language data has yielded the conclusion that the various means of negation are capable to express all the nuances of meaning through negation of varying strength.