Where does “robust” come from?
robust (Norwegian Bokmål) comes from Latin rōbustus, from Latin rōbur, from Latin ruber, from Proto-Italic ruðros, from Proto-Indo-European h₁rudʰrós, from Proto-Indo-European h₁rewdʰ- — red.
robust (Norwegian Bokmål): robust, sturdy
Ancestry of “robust”, step by step