Old English puca

← German Spuk (cognate)

← Middle Dutch spooc (cognate)

← English spook (link)

← Proto-Germanic *pūkô (inherited)

← Middle High German gespük (cognate)

← Middle Low German spōk (cognate)

← Middle Low German spūk (mention)

← Proto-Indo-European *(s)pāuǵ- (derived)

← Proto-Indo-European *(s)pāug- (mention)

← Dutch spook (cognate)

← Old Norse púki (cognate)

← Swedish puke (cognate)

→ Cornish bucca (borrowed)