Where does “keihard” come from?

keihard (Dutch) comes from Dutch hard, from Middle Dutch hart, from Old Dutch hart, from Proto-West Germanic hard(ī), from Proto-Germanic harduz, from Proto-Indo-European kert-, from Proto-Turkic *keŕ- — to travel, tour.

keihard (Dutch): hard as a rock, extremely powerful; very loud

Definitions

  1. hard as a rock, extremely powerful; very loud

Ancestry of “keihard”, step by step

keihard traces back through two separate lines of ancestry.

via Dutch hard

StepLanguageWordMeaning
1Dutchhardhard, strong; strong, not easily devalued;...
2Middle Dutchharthard; solid, sturdy; hard, harsh, cruel
3Old Dutchharthard
4Proto-West Germanichard(ī)hard
5Proto-Germanicharduzhard; brave
6Proto-Indo-Europeankert-times; to weave, twist together; time
7Proto-Turkic*keŕ-to travel, tour

via Dutch kei

StepLanguageWordMeaning
1Dutchkeicobble, cobblestone; pebble; boulder
2Middle Dutchkey
3Old Dutchkei
4Proto-Germanickagi-
Every word from Proto-Turkic *keŕ-Every word from Proto-Indo-European kert-Every word from Proto-Germanic harduz
keihard — Etymology, Origin & Word History | Etymology Explorer