Synonyms for diabolical

Similarity of adj diabolical

2 senses of diabolical

Sense 1:

devilish, diabolic, diabolical, mephistophelian, mephistophelean
evil (vs. good)

Sense 2:

demonic, diabolic, diabolical, fiendish, hellish, infernal, satanic, unholy
evil (vs. good)