English
ghoster
From ghost + -er.
Formed from ghost + -er
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 A ghosthunter; a paranormal investigator.
Language periods are conventional ranges, not dates for this word.
Etymograph / ghoster