Where does “breakneck” come from?

Breakneck combines English break, from Middle English breken and Old English brecan meaning to shatter, with English neck, ultimately tracing through Proto-Germanic hnakkô and Proto-Indo-European roots expressing the sense of breaking or fracturing.

breakneck (English): Dangerously fast; hell-for-leather; A fall that...

Definitions

  1. Dangerously fast; hell-for-leather; A fall that...

Ancestry of “breakneck”, step by step

breakneck 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 break

StepLanguageWordMeaning
1EnglishbreakTo separate into two or more pieces, to fracture...
2Middle Englishbrekento break
3Old Englishbrecanto break; to break into a place
4Proto-West Germanicbrekanto break
5Proto-Germanicbrekanąto break
6Proto-Indo-Europeanbʰrēǵ-to shine, shimmer
Every word from Proto-Indo-European ken-