say it: di-MAH-nik
demonic is an adjective meaning "extremely evil or cruel; expressive of cruelty or befitting hell". It carries one recorded sense.
extremely evil or cruel; expressive of cruelty or befitting hell
“something demonic in him--something that could be cruel”
“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”
Definitions, synonyms and semantic relations for demonic come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.