Extremely evil or cruel; expressive of cruelty or befitting hell. Synonyms: diabolic, diabolical, fiendish, hellish, infernal, satanic, unholy. "Fires lit up a diabolic scene" , "Diabolical sorcerers under the influence of devils" , "A fiendish despot" , "Hellish torture" , "Infernal instruments of war" , "Satanic cruelty" , "Unholy grimaces"
