1. evil: very wrong or very bad.2. mischievous: playfully mischievous without intending to upset people seriously. A wicked sense of humor.3. mean: expressing very unpleasant things to people. She has a really wicked tongue sometimes!. 4. dangerous: capable of causing harm to somebody a knife with a wicked blade. 5. disgusting: tasting or smelling disgusting and repulsive 6. distressing: causing discomfort, distress, or disappointment (informal) . I’ve got a wicked headache. 7. very good: very impressive or very skillful (slang) He plays a wicked game of tennis.