Modern Slavic languages, as has been proven, have inherited a large layer of vocabulary from the Indo-European proto-language (Proto-Indo-European). From this ancestor there were also inherited some terms the abstract Slavic lexis for human emotions is based on. Often such words are derived from the Proto-Indo-European etymons denoting physical phenomena of the material world, such as temperature (PIE *steud-/stoud- ‘to get cool’ for PSL *studъ/*stydъ), movement (PIE *teku̯- ‘to flow, to run’ for Cz vzteklý and P wściekły), visual appearance of a certain object (PIE *ǵhū̆l- ‘crooked, twisted’ for PSL *zъlъ) or its qualities (PIE *(s)ter- ‘to be stiff, rigid, hard’ for PSL *strachъ), as well as physical actions such as putting (PIE *dhē ‘to put down’ for PSL *nadedja), breathing or blowing (PIE *dheu- ‘to breathe; to blow’ for the Slavic terms denoting inspiration), shining (PIE *dei- “to shine” for the Slavic words for emotion of surprise), scratching (PIE *kes- “to scratch” for Cz kochat, Slk kochať, P kochać, U кохати, Bel кахаць), crashing (PIE *men(H)- ‘to crush, trample’ for PSL *sъmǫtьnъ), or actions aimed for the fire production (PIE *ghnēi- ‘to rub’ for PSL *gněvъ).