Where does “hardihead” come from?

hardihead (English) comes from English Hardy, from Middle English hardy, from Old French hardi, from Old French hardir, from Frankish hardijan, from Proto-Germanic hardijaną, from Proto-Germanic harduz, from Proto-Indo-European kert- — to travel, tour.

Ancestry of “hardihead”, step by step

hardihead traces back through two separate lines of ancestry.

via English Hardy

StepLanguageWordMeaning
1EnglishHardynow absorbed into Chorlton-cum-Hardy
2Middle Englishhardy
3Old Frenchhardihardy; tough; durable
4Old Frenchhardirto harden
5Frankishhardijanto harden, to make hard
6Proto-Germanichardijanąto make hard, strong; to harden
7Proto-Germanicharduzhard; brave
8Proto-Indo-Europeankert-times; to weave, twist together; time
9Proto-Turkic*keŕ-to travel, tour

via English head

StepLanguageWordMeaning
1EnglishheadThe part of the body of an animal or human which...
2English-yAdded to nouns and adjectives to form adjectives...
3Middle English-yDesignates an adjective, in many cases formed by...
4Old English-iġ-y, -ic
5Proto-West Germanic-gForms adjectives from nouns and verbs with a...
6Proto-Germanic-gaz-y
7Proto-Indo-European-ḱos-y, -ic
Every word from Proto-Turkic *keŕ-
hardihead — Etymology, Origin & Word History | Etymology Explorer