Ysbryd drwg
Ysbryd; Holy Spirit= Ysbryd Glan
an evil spirit
Good Spirit
An evil spirit's hammer and wrench are a ghoul's tools
Sightings - 1992 Evil Spirit was released on: USA: 1996
No, scientifically these are not recognised to exist so they can not be cured.
They thought that evil spirits made them ill.
To drive out an evil spirit.
Zero
The evil spirit to whom Faust sold his soul is named Mephistopheles.
Not exactly an answer but,The Welsh and Irish are kindred spirits.Mae'r Cymry a'r Gwyddelod yn debyg i'w gilydd.
What Evil spirit that likes to cause trouble for humans with o and I in the word