Where does “usztywniać” come from?
usztywniać (Polish) comes from Polish usztywnić, from Polish sztywny, from Middle High German stīf, from Old High German *stīf, from Proto-West Germanic stīf, from Proto-Germanic stīfaz, from Proto-Indo-European steypós.
usztywniać (Polish): to stiffen, to make rigid
Definitions
- to stiffen, to make rigid