Glückwunsch (German) comes from German Wünsch, from Middle High German wunsch, from Old High German wunsc, from Proto-Germanic wunskō, from Proto-Indo-European wenh₁- — to love.
Glückwunsch (German): congratulation
Definitions
congratulation
Ancestry of “Glückwunsch”, step by step
Glückwunsch traces back through two separate lines of ancestry.