Where does “tvrdnout” come from?
tvrdnout (Czech) comes from Czech tvrdý, from Proto-Slavic tvьrdъ, from Proto-Balto-Slavic *twírˀtas, from Proto-Indo-European twerH- — to enclose, fence in; to grab, seize; to stir.
tvrdnout (Czech): to harden, to get hard, to become hard
Definitions
- to harden, to get hard, to become hard