Where does “bekräftigen” come from?
bekräftigen (German) comes from German kräftigen, from German kräftig, from Middle High German kreftic, from Old High German kreftīg, from Proto-Germanic *kraftīg, from Proto-Germanic kraftugaz — powerful, mighty.
bekräftigen (German): To confirm, corroborate
Ancestry of “bekräftigen”, step by step