Demonic is a word to describe behavior or people who are extremely evil or cruel. ... Demonic has that same kind of hellish, diabolical, fiendish, infernal, satanic, unholy quality. This word should not be used lightly.

What does demonically mean?

: of, relating to, or suggestive of a demon : fiendish demonic cruelty demonic laughter.

What does Demonias mean?

: one possessed by a demon.