to abolish by formal or official means; annul by an authoritative act; repeal

to abrogate a law.

to put aside; put an end to.

verb

approve , establish , fix , institute , legalize , ratify , sanction , support

verb

abate , abolish , annul , cancel , dissolve , do in * , end , finish off * , invalidate , knock out * , negate , nix , nullify , quash , reject , renege , repeal , retract , revoke , scrub * , torpedo * , undo , vacate , vitiate , void , annihilate , set aside , overrule , remit , repudiate , rescind