Where does “supersusceptible” come from?

supersusceptible (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 “supersusceptible”, step by step

supersusceptible 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 susceptible

StepLanguageWordMeaning
1Englishsusceptiblelikely to be affected by something; easily...
2Late Latinsusceptibilisacceptable; susceptible
3Latinsusceptustaken up, having been taken up, acknowledged,...
4LatinsuscipioI take up, acknowledge; I undertake, assume,...
5Latincapiōto take, to capture, to catch, to seize, to take captive, to storm
6Proto-Italickapiōtake
7Proto-Italickapjōtake, seize
8Proto-Indo-Europeankh₂pyéti
9Proto-Indo-Europeankeh₂p-to seize, grab; to seize; take up; lift; to take,...
Every word from Proto-Indo-European éǵh₂Every word from Proto-Germanic *ekEvery word from Proto-West Germanic ik