1. A partial repeal, or abolition, of a law: The state government passed a derogation of some social services because it was costing too much to maintain them.
2. A deviation from a rule or law; especially, one which is specifically provided for: The Senate Committee required new data in order to determine which sectors of the law would qualify for the derogation.
3. The act of belittling, or criticizing, someone or something: Gary, the radio talk-show host, used derogations to discredit the politician's positions on how to improve the nation's economic situation.