The category of intensity is an interesting semantic category reflected in language on many levels. The subject of the description in the dissertation is the broadly defined category of intensity in the Polish-Slovak confrontational aspect (which includes dynamic processes of intensification and disintensification), and presented on the example of formal morphological exponents, through the prism of the part of speech: the adjective and the verb. The research on verbs was conducted from the perspective of the kind of action. Comparing these processes shows that the Polish language has a more significant resource of morphological exponents indicating the intensification process. In contrast, the Slovak language has a richer means of signalling disintensification.