English
ghostism
From ghost + -ism.
Formed from ghost + -ism
Proto-Indo-European *ǵʰéysd-
…
Proto-Germanic *gaistaz ‘terror’
Proto-West Germanic *gaist ‘ghost’
Old English gāst ‘breath’
Middle English gost ‘a spiritual being’
English ghost
Today it means
noun Belief in ghosts.
Language periods are conventional ranges, not dates for this word.
Etymograph / ghostism