Where does “knaldhård” come from?

knaldhård (Danish) comes from Danish hård, from Old Danish harth, from Old Norse harðr, from Proto-Germanic harduz, from Proto-Indo-European kert-, from Proto-Turkic *keŕ- — to travel, tour.

knaldhård (Danish): very hard, very tough

Definitions

very hard, very tough

Ancestry of “knaldhård”, step by step

Step	Language	Word	Meaning
1	Danish	hård	hard; tough; severe, harsh
2	Old Danish	harth	—
3	Old Norse	harðr	hard; hard, stern, severe; hardy
4	Proto-Germanic	harduz	hard; brave
5	Proto-Indo-European	kert-	times; to weave, twist together; time
6	Proto-Turkic	*keŕ-	to travel, tour

Every word from Proto-Turkic *keŕ- →Every word from Proto-Indo-European kert- →Every word from Proto-Germanic harduz →