Where does “poltergeistic” come from?

poltergeistic (English) comes from English poltergeist, from German Poltergeist, from German geist, from Middle High German geist, from Old High German geist, from Proto-West Germanic gaist, from Proto-Germanic gaistaz, from Proto-Indo-European ǵʰeysd- — anger, agitation.

poltergeistic (English): Of, pertaining to, or resembling a poltergeist,...

Definitions

  1. Of, pertaining to, or resembling a poltergeist,...

Ancestry of “poltergeistic”, step by step

poltergeistic traces back through two separate lines of ancestry.

via English poltergeist

StepLanguageWordMeaning
1EnglishpoltergeistAn unseen ghost which makes noises and causes...
2GermanPoltergeistpoltergeist
3Germangeistspirit
4Middle High Germangeist
5Old High Germangeistspirit
6Proto-West Germanicgaistghost, spirit
7Proto-Germanicgaistazterror, fear; spirit, ghost; mind
8Proto-Indo-Europeanǵʰeysd-anger, agitation

via English ic

StepLanguageWordMeaning
1Englishicrelated or pertaining to; having the character of
Every word from Proto-Indo-European ǵʰeysd-Every word from Proto-Germanic gaistazEvery word from Proto-West Germanic gaist