The Collaborative International Dictionary
Obrogate
Obrogate \Ob"ro*gate\, v. t. [L. obrogatus, p. p. of obrogare to
obrogate.]
To annul indirectly by enacting a new and contrary law,
instead of by expressly abrogating or repealing the old one.
[Obs.]
--Bailey.
Wiktionary
obrogate
vb. (context legal rare English) To annul a law by enacting a new law, as opposed to repealing the former law.