Where does “full-throttle” come from?

full-throttle (English) comes from English full, from Middle English fúl, from Old English full, from Proto-West Germanic full, from Proto-Germanic fullaz, from Proto-Indo-European pl̥h₁nós, from Proto-Indo-European pleh₁- — to fill.

full-throttle (English): Alternative form of full throttle

Definitions

  1. Alternative form of full throttle

Ancestry of “full-throttle”, step by step

full-throttle traces back through two separate lines of ancestry.

via English full

StepLanguageWordMeaning
1EnglishfullContaining the maximum possible amount that can...
2Middle Englishfúlvery; much; to a great extent
3Old Englishfullfull, filled, complete, entire; a beaker; a cup,...
4Proto-West Germanicfullfull
5Proto-Germanicfullazfull; the whole, the entire
6Proto-Indo-Europeanpl̥h₁nósfull
7Proto-Indo-Europeanpleh₁-to fill

via English throttle

StepLanguageWordMeaning
1EnglishthrottleA valve that regulates the supply of fuel-air...
2Middle Englishthrotlento choke, strangle, suffocate
Every word from Proto-Indo-European pleh₁-Every word from Proto-Indo-European pl̥h₁nósEvery word from Proto-Germanic fullaz