1 of, relating to, or characteristic of a demon; fiendish
2 inspired or possessed by a demon, or seemingly so
English Collins Dictionary - English Definition & Thesaurus
demonic , demoniac, demoniacal
1 devilish, diabolic, diabolical, fiendish, hellish, infernal, satanic
2 crazed, frantic, frenetic, frenzied, furious, hectic, like one possessed, mad, maniacal, manic
English Collins Dictionary - English synonyms & Thesaurus
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