Where does “superbracket” come from?

superbracket (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.

Ancestry of “superbracket”, step by step

superbracket 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 bracket

StepLanguageWordMeaning
1EnglishbracketA fixture attached to a wall to hold up a shelf;...
2EnglishbraggetA liquor made of fermented ale and honey with...
3Middle Englishbragotbragget
4Middle Welshbragod
5Middle Welshbragmalt
Every word from Proto-Indo-European éǵh₂Every word from Proto-Germanic *ekEvery word from Proto-West Germanic ik