satanic
sa-tan-ic
adjective
Relating to or characteristic of Satan, the Devil, or evil forces.
"They discovered a secret satanic cult."
adjective
Extremely evil, cruel, or wicked; devilish in nature or intent.
"His satanic grin sent shivers down her spine."
Thesaurus
Synonyms: demonic, hellish, infernal, diabolic, unholy, evil, fiendish, diabolical