demoniac
Concise Oxford English Dictionary © 2008 Oxford University Press:
demoniac /dɪˈməʊnɪak/
▶adjective demonic. ▶noun a person supposedly possessed by an evil spirit.
– derivatives
demoniacal adjective,
demoniacally adverb.
demoniacal adjective,
demoniacally adverb.
'demoniac' also found in these Oxford entries:

