de ‧ rog ‧ ate /ˈderəɡeɪt/ BrE AmE verb
[ Date: 1400-1500 ; Language: Late Latin ; Origin: derogare , from Latin rogare 'to ask, make a proposal for (a law)' ]
law to state officially that a part of a law or agreement has ended and that it no longer has any legal authority
derogate from something phrasal verb formal
1 . to make something seem less important or less good:
Louis XIV clearly thought it derogated from his dignity as a ruler.
2 . to ignore a responsibility or duty