nullify

US /ˈnʌl.ə.faɪ/

UK /ˈnʌl.ə.faɪ/

1.

make legally null and void; invalidate

:

•

The contract was nullified due to a technicality.

•

The new law will nullify the previous regulations.

:

annul invalidate void cancel revoke rescind abrogate negate undo overturn

2.

make of no use or value; cancel out

:

•

The strong winds nullified the effect of the sails.

•

His efforts were nullified by a lack of support.

:

negate cancel out offset counteract neutralize undo void invalidate annul revoke