Where does “stiffnecked” come from?

stiffnecked (English) comes from English neck, from Middle English nekke, from Old English hnecca, from Proto-West Germanic *hnakkō, from Proto-Germanic hnakkô, from Proto-Indo-European knog-, from Proto-Indo-European ken- — to arise, begin.

Ancestry of “stiffnecked”, step by step

stiffnecked traces back through two separate lines of ancestry.

via English neck

StepLanguageWordMeaning
1EnglishneckThe part of the body connecting the head and the...
2Middle Englishnekkeneck
3Old Englishhneccaback of the neck; back of the head; neck
4Proto-West Germanic*hnakkōnape
5Proto-Germanichnakkôthe back of the neck; nape
6Proto-Indo-Europeanknog-back of the head, nape, neck
7Proto-Indo-Europeanken-to arise, begin

via English stiff

StepLanguageWordMeaning
1EnglishstiffRigid; hard to bend; inflexible; Inflexible;...
2Middle EnglishstifStiff, firm, hard; difficult to move or...
3Old EnglishstīfStiff, firm, hard
4Proto-West Germanicstīfstiff, rigid
5Proto-Germanicstīfazstiff, rigid
6Proto-Indo-Europeansteypós

Words derived from “stiffnecked

Every word from Proto-Indo-European ken-Every word from Proto-Indo-European knog-Every word from Proto-Germanic hnakkô