Where does “knee-jerkism” come from?

knee-jerkism (English) comes from English knee-jerk, from English knee, from Middle English knē, from Old English cnēo, from Proto-West Germanic kneu, from Proto-Germanic knewą, from Proto-Indo-European ǵnéwo-, from Proto-Indo-European ǵónu — knee.

knee-jerkism (English): behavior

Definitions

  1. behavior

Ancestry of “knee-jerkism”, step by step

knee-jerkism traces back through two separate lines of ancestry.

via English knee-jerk

StepLanguageWordMeaning
1Englishknee-jerkUnthinking, not carefully considered, automatic,...
2EnglishkneeIn humans, the joint or the region of the joint...
3Middle EnglishknēThe knee or a similar joint in other animals
4Old Englishcnēogeneration
5Proto-West Germanickneuknee
6Proto-Germanicknewąknee
7Proto-Indo-Europeanǵnéwo-knee
8Proto-Indo-Europeanǵónuknee

via English ism

StepLanguageWordMeaning
1EnglishismAn ideology, system of thought, or practice that...
2English-ismUsed to form nouns of action or process or result...
3Latin-ismus-ism
4Ancient Greek-ισμόςForms abstract nouns
5Ancient Greek-μόςForms abstract nouns
6Proto-Indo-European-mósCreates action/result nouns from verb stems
Every word from Proto-Indo-European ǵónuEvery word from Proto-Indo-European ǵnéwo-Every word from Proto-Germanic knewą