Where does “superclean” come from?

superclean (English) comes from English super, from English super-ego, from German Über-Ich, from German Ich, from Middle High German ich, from Old High German ih, from Proto-West Germanic ik, from Proto-Germanic *ek — I.

superclean (English): Containing very few impurities

Definitions

  1. Containing very few impurities

Ancestry of “superclean”, step by step

superclean traces back through two separate lines of ancestry.

via English super

StepLanguageWordMeaning
1EnglishsuperOf excellent quality, superfine; better than...
2Englishsuper-egoAlternative spelling of superego
3GermanÜber-Ichsuperego
4GermanIchego, the Ich; self, me, him, etc
5Middle High GermanichI
6Old High GermanihI
7Proto-West GermanicikI
8Proto-Germanic*ek
9Proto-Indo-Europeanéǵh₂I

via English clean

StepLanguageWordMeaning
1Englishclean"Free of dirt or impurities or protruberances.";...
2Middle Englishcleneclean
3Old Englishclǣnepure, clear; clean, pure
4Proto-Germanicklainizshining, fine, splendid; tender, precious
5Proto-Indo-Europeang(e)lēi-gleaming
6Proto-Indo-Europeanǵel-to swallow; swallow
Every word from Proto-Indo-European éǵh₂Every word from Proto-Germanic *ekEvery word from Proto-West Germanic ik