derogation derogation /ˌdɛrəˈgeɪʃən/

noun

1. (law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law  ( derogation )
   (law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
    Any derogation of the common law is to be strictly construed
   any derogation of the common law is to be strictly construed
   
2. A communication that belittles somebody or something  ( depreciation , derogation , disparagement )
   a communication that belittles somebody or something