Synonyms of demonic in English:

demonic


See US English definition of demonic

See UK English definition of demonic

See Spanish definition of demoníaco

adjective

1‘the signs of demonic possession’

SYNONYMS
devilish, demoniac, demoniacal, diabolic, diabolical, fiendish, satanic, Mephistophelian, hellish, infernal, evil, wicked, ungodly, unholy
rare cacodemonic
ANTONYMS

angelic

2‘the demonic intensity of his playing’

SYNONYMS
wild, frenzied, feverish, frenetic, hectic, frantic, furious, hysterical
maniacal, manic, like one possessed