adjective
1.
Synonyms: fiendish , demoniac, demonian, demonic, diabolic, diabolonian, satanic, serpentine, unhallowed
Related Word: iniquitous, nefarious, villainous; accursed, cursed, damnable, execrable; bad, evil, wicked
Antonyms: angelic
2.
Synonyms: satanic 1, diabolic, Mephistophelian